The crinkling of the disk reminds me a lot of how when you try to embed the flat torus in Euclidean space (isometrically), you end up with a fractal of crinkles on the surface.
@burakbalcioglu2 жыл бұрын
That's exactly what I thought too
@saulschleimer20362 жыл бұрын
That is a nice observation!
@teo_lp2 жыл бұрын
Wow, I just found a picture of that by googling it, does that embedding have a name?
@kaidatong17042 жыл бұрын
unrelated, but I remember trying to do smth similar, but less inspired / more forced. drew origami folding diagram for merging two angles into one (there was this hands-on activity for fitting coin of diameter x through index card hole with circumference 2x, that creates way too many tiny folds that I couldn’t do it with that thickness of paper, so had to improvise) it’s a long story. I saw some line replacement fractals, but each iterations gets multiplied by a whole number, so at least x2. I wanted lesser ones like fibonacci or smth, but got lazy and was like heck, just split it 90-10. but some parts being more detailed was annoying to my ocd, so just made queue for where to add detail next, like, start with 1. make .9 and .1, resolve .9 next, make .81 and .09, and so on. which has absolutely nothing to do with the nature of the thing itself
@neopalm20502 жыл бұрын
Interestingly, both are somewhat related to Gromov.
@kyrius_gm42 жыл бұрын
This is so confusing and i feel like i barely understand anything but i love it! Its so interesting!
@saulschleimer20362 жыл бұрын
Glad you like it!
@dawnhansen78862 жыл бұрын
100% agree ❕️
@w_ldan2 жыл бұрын
Yeah
@bellaF Жыл бұрын
glad I'm not the only one who feels like this lol ^^
@dreamsolutions3037 Жыл бұрын
Right? Me clicking on this video: "Ooh fractals!" Afterwards: "oh. Nice."
@DavidG2P2 жыл бұрын
What a time to be alive where intricate and incredibly complex mathematics can be visualized in such beauty!
@lunafoxfire2 жыл бұрын
I definitely don't understand the details but you did a great job of explaining the general idea. I think one of the biggest things is that I don't really understand what a universal cover is.
@saulschleimer20362 жыл бұрын
We discuss this a bit more in our cohomology fractals video here: kzbin.info/www/bejne/nJmlgZufmpaHo5I I am happy to answer questions, as well.
@mikeebrady2 жыл бұрын
6:37 Henry: "You could imagine..." Me: "No, no I don't think I could imagine that."
@modolief2 жыл бұрын
You guys do _such a good job_ of interweaving your commentary. That's a real skill!
@minerharry2 жыл бұрын
Just wanted to appreciate how well put together this video was, you two talked very smoothly around each other. Great math as always!
@slug..2 жыл бұрын
I noticed that too they sort of reminded me of twins they kind of finish each other's sentences it works very good video
@ianwhittinghill Жыл бұрын
I’m so glad these guys found each other and get to be friends
@SocksWithSandals2 жыл бұрын
The surface on my bedroom floor is an ever growing space-filling fractal, which in the limit becomes the floor when I've had enough and tidy my room
@peetiegonzalez18452 жыл бұрын
This was extremely interesting, but of course it’s such a complex topic that one ad-hoc video like this doesn’t do it justice. I hope you can make a future video, fully scripted, in which you explain clearly what’s going on. And yes, with more animations, and even some actual maths!
@saulschleimer20362 жыл бұрын
We have various research level papers on this topic (on the arXiv, with the word "veering triangulations" in the title) that begins to lay out the theory. We have three more papers in various stages that will also appear on the arXiv "real soon now". This video is meant as an "explainer" (without too much maths) and an "invitation" (to a wider audience). At least, that is my feeling - Henry may have a different opinion!
@BILLY-px3hw2 жыл бұрын
@@saulschleimer2036 Thanks it helps for us visual thinkers, a lot of time I get caught up trying to understand the math instead of just looking at th visual information. Is this related to any of the work Roger Penrose was doing with his tiling?
@saulschleimer20362 жыл бұрын
@@BILLY-px3hw That is an interesting question. There is no obvious connection, but I think there may be non-obvious ones. In particular, the CT map approximations obey a "subdivision rule" where the tiles come in a particular order. The Penrose tiling also has a subdivision rule. It would be interesting to see if the tiles appearing in the rule could be ordered. We could then play a "connect the dots" game (as in the Hilbert curve approximations) and produce a plane filling curve from the Penrose tiling. I've not see this in the literature...
@saulschleimer20362 жыл бұрын
@@BILLY-px3hw And now I have done a quick search, and found a paper titled "Space-filling curves on non-periodic tilings" by Fred Henle. So there is at least some work in this direction. The final paragraphs of that paper mention some "uncomfortable compromises", so perhaps there is a deeper theory to be explored here.
@michaeldeierhoi40962 жыл бұрын
The fractal aspect of these images are what caught my eye. Thanks for posting this.
@telotawa2 жыл бұрын
i don't understand the math for once but i do see that it's an awesome shape and i want one
@simongregory31142 жыл бұрын
relatable, except I would replace 'for once' with 'as always'.
@telotawa2 жыл бұрын
i usually understand math videos, not understanding one feels super weird, this feels like occult incantations
@modolief2 жыл бұрын
Where do I buy the wallpaper??
@bhante13452 жыл бұрын
Take acid, you get to live in the curve for 8 hours.
@FtwXXgigady2 жыл бұрын
I was just looking at a sliced purple cabbage today and realized it looks like a space filling curve, like the cabbage is trying to maximize surface area within a finite space. I tried to find articles about it, like about why the cabbage grows like that, but couldn't find any. I'm gonna have to congratulate whatever algorithms youtube has because this is more or less what I was thinking about, except this is obviously much more theoretically rigorous.
@saulschleimer20362 жыл бұрын
Excellent point! I looked at some images of half sliced cabbages on-line and found some with a five-fold "loxodromic" symmetry about their centre. This looks a lot like a Cannon-Thurston map in the compact case? (But of course the non-compact and compact cases look a lot like each other...)
@imconsequetau52752 жыл бұрын
The degree of folding will increase the surface area of the leaves. The human brain has a similar folding to increase the surface area of white matter. This is how our brains can consume so much more energy in a given volume.
@Ab-qv8zc2 жыл бұрын
Wow! Something that looks random is actual a complex geometrical pattern. Really cool! It outer border almost looks like a Mandelbrot set. This is a great balance of art and science, and it forces the mind to expand in order to enjoy this mathematical beauty.
@JacobCanote2 жыл бұрын
HI Saul. We did Joseph and the Amazing Technocolor Dreamcoat in 1989. Great to see your awesome space filling curves.
@saulschleimer20362 жыл бұрын
Glad you liked it! Nice to see you again.
@steampunkfox2 жыл бұрын
I'm autistic and one of my stims was to tap my fingers in a pattern that is almost exactly the same as the Hilbert Map you showed. Fascinating.
@henriquealecrim24972 жыл бұрын
This video is, for me, one of the highest points of mathematical exposition in this whole site
@saulschleimer20362 жыл бұрын
Thank you very much!
@ISawSomethingOnTheInternet2 жыл бұрын
I’m pretty sure these guys discovered the geometric fabric of space-time.
@carel912 жыл бұрын
This is amazing. I am glad that I can watch all your work. This is really inspiring. Thank you
@ifroad332 жыл бұрын
The fact that they tile really surprised me! So cool!
@andrettibark2 жыл бұрын
I don't even know what classes I would need to take to understand this video.
@saulschleimer20362 жыл бұрын
Topology. And hyperbolic geometry. Both taught at Warwick Uni. :)
@incription2 жыл бұрын
Does anyone else have an urge to print fractals in nanometer resolution? I know it's impossible but they would look so cool
@yayforfood1002 жыл бұрын
it's not entirely impossible. the semiconductor manufacturing industry regularly prints near-nanometer scale images
@incription2 жыл бұрын
@@yayforfood100 Anyone got 10 billion to spare?
@whatelseison89702 жыл бұрын
@@incription Certain fractals are actually used as antennas by etching them on pcb's. There's also current research into using nanoscale rectennas for energy harvesting so who knows, maybe someone is already doing that in a lab somewhere.
@RobertSzasz2 жыл бұрын
Not impossible, just really expensive.
@alexhudspeth12132 жыл бұрын
@@whatelseison8970 ssshhh you promised not to tell
@TheAlison1456 Жыл бұрын
Really good video. No mentions of abstract mathematics in a way that repels anyone not "in the know" and who "doesn't study" maths. Nothing wrong with "abstract mathematics", rather the attitude mentioned.
@thedebapriyakar2 жыл бұрын
Came here to have my mind exploded and elevated. Totally worth it!
@luke.perkin.inventor2 жыл бұрын
What a funny duo on 2x speed, finishing each others sentences 😂 Fascinating stuff. It'd be helpful if all the other videos linked were also listed in the description!
@dudewaldo42 жыл бұрын
We are NOT stuck with names! Rename them to whatever you want! Future generations will be grateful
@wacomtexas2 жыл бұрын
Beautiful. As soon as you mentioned crinkling I knew Daniel Piker would be involved somehow. Incidentally, I bought some delicious but very flat kale from Borough Market the other day..
@triberium_2 жыл бұрын
Amazing how much thinking goes into making such abstract ideas come to life
@chadschaefer50842 жыл бұрын
That wooshing noise you heard was my head exploding as your explanation went over it right around the point of mobius transformations and the knot.
@attacg2 жыл бұрын
Beautiful, crinkly. Great figure 8 bubble animation & explanation
@xgozulx2 жыл бұрын
I didn't really understand it, but at the same time I was in awe the whole video... I loved it and im confused
@johneonas66282 жыл бұрын
Thank you for the video.
@MonkeySimius2 жыл бұрын
Neat designs. I didn't understand where they come from or what they represent in the slightest.
@bloomp79992 жыл бұрын
great conversation man ! we need more of these converstions on KZbin
@JamesSpeiser2 жыл бұрын
Fantastic material, presentation and dynamic between presenters. Bravo
@kaleygoode16812 жыл бұрын
I for one would love tiles like that! Wonderful how they plug together... And great how you overlaid your result over the previous work. Time to put your names on that figure 8 result!
@040_faraz92 жыл бұрын
Only if someone could make such lucid videos of algebraic things, schemes, varieties, etale cohomology and all things Grothendiecky!
@alexhudspeth12132 жыл бұрын
It's like we're looking behind the simulation. Fascinating.
@mmomus58632 жыл бұрын
Already love it. What a great premiere to catch.
@cirecrux Жыл бұрын
The animations are beautiful
@theman13532 Жыл бұрын
4:08 this would make a CRAZY mario kart battle mode track
@jonroland27022 жыл бұрын
This must be the formula they use at amusement parks for the lines
@seedmole2 жыл бұрын
Very fun, I spent an hour or two reading about Hilbert's Grand Hotel and such--good job pushing this video to me, algorithm.
@Perplaxus2 жыл бұрын
This is a good video for those who kinda understand the subject
@ourladymelody2 жыл бұрын
I love the phrase "the compliment of the knot"--that which is Not the kNot.
@jacobhawthorne19972 жыл бұрын
Outstanding as always!
@KaliFissure2 жыл бұрын
Great video. 👍3D L system is my fidget toy. Space fillingness seems to be emergent in many cases. The surface is space itself and as we are seeing from JWST the distortion gets greater and greater and at limit a single photon is smeared across the entire sphere.The cmb.
@tisanne2 жыл бұрын
not entirely certain how i got here but it's very interesting indeed!
@telotawa2 жыл бұрын
i'd love to have this as a wallpaper, can you publish the code? or make a renderer for this version?
@henryseg2 жыл бұрын
The code is up at github.com/henryseg/Veering, although I’m not sure how user friendly it is. You’ll need sage with pyx installed for drawing the graphics. The relevant file is “scripts/draw_continent.py”, with some usage examples at the bottom of “draw_continent_hack.py”. The code is not in a very clean state at the moment… the hack was to get one of the animations for this video!
@cyancoyote73662 жыл бұрын
Can't promise anything as I'm a but busy these days, but if I have some time today I'll try to get a render for your somehow using this code if I can manage it. If I'm successful I'll upload it somewhere here as an uncompressed image. :)
@leif10752 жыл бұрын
@@henryseg Thanks for sharing Henry. I hope you can respond to my email or other message when you can. Thanks very much.
@maibster2 жыл бұрын
Great video, impressive animations
@simialogue2 жыл бұрын
I am reduced to being existentially nonplussed. It's not that I don't apprehend possible understanding - I mean it's just over there, lurking in the corner - I do. It's just... I seem to be in a round room. Perhaps through fascination and a lot of head scratching, I'll be able to join it.
@brianmcquain3384 Жыл бұрын
very cool I am enjoying this
@ytrebiLeurT Жыл бұрын
It's a fractal, something that resembles itself, self-similarity is everywhere...
@VJFranzK Жыл бұрын
it's one of the most "hand drawn" looking geometric shapes!
@hughjanus35912 жыл бұрын
Very cool video! I did not understand any of it
@saulschleimer20362 жыл бұрын
We are happy to answer questions!
@hughjanus35912 жыл бұрын
@@saulschleimer2036 so The way canon thurston maps fill the plane are analogous to the way Hilbert curves fill a square but you started bringing in Euclidean and non Euclidean geometry, and wires with bubble film and popping sections and that’s when I started getting confused. A specific question would be what exactly is non Euclidean geometry and how do canon thurston maps interact with it. A little bit of context for me is I start college algebra in a few weeks, but I have used hilbert curves to plot x,y coordinates on a 1d line
@saulschleimer20362 жыл бұрын
@@hughjanus3591 "what exactly is non Euclidean geometry" by this we mean "hyperbolic geometry". I can recommend books by James Cannon (Two-Dimensional Spaces, Volumes 1, 2, and 3), by Mumford-Series-Wright (Indra's Pearls), and by Jessica Purcell (Hyperbolic Knot Theory).
@saulschleimer20362 жыл бұрын
"how do canon thurston maps interact with it" - well, this is much harder. Hyperbolic space has a "boundary at infinity" which is a sphere. This is already difficult. The spanning surface in the knot complement gives a disk in hyperbolic space, and so gives a "curve" in the boundary at infinity. That is the Cannon-Thurston map. The details of the construction are subtle, and we don't give them in the video.
@kyrius_gm42 жыл бұрын
I dont understand much either but i think a great set of videos to understand hyperbolic space is to watch CodeParades videos on his hyperbolic game he made called Hyperbolica :)
@whoatemywendys2 жыл бұрын
One could say a cannon-thurston map is a frac-tile
@saulschleimer20362 жыл бұрын
Nooooooooo! The pain…
@FarranLee Жыл бұрын
7:33 I don't know how to express the idea in my mind but this image is the best representation I've ever seen of it. Basically, something like, different levels / planes / realms / fields of reality are functioning in their own ways, but they coincide at points along their paths of activity, and those co-incidences are what draws the actual into the real. Not sure if this idea is remotely relevant to what you're demonstrating, but the last video I watched was about the existence of quantum particles and the quantum fields etc, so this follows on nicely.
@aepokkvulpex2 жыл бұрын
When they were tiled I could kinda see a hexagonal pattern
@saulschleimer20362 жыл бұрын
Good eye. The dihedral angles of the "hyperbolic ideal tetrahedra" are all 60 degrees, which leads to lots of "broken six-fold symmetries" in CT map.
@withnosensetv2 жыл бұрын
@@saulschleimer2036 I love how actively you guys are engaging in the comments. Keep up the great work, this was super interesting
@TheStarBlack2 жыл бұрын
Before I clicked, I didn't know I didn't know about any of this. Now I know I don't know about it.
@alden1132 Жыл бұрын
Ooooh, I have visceral dislike of the squiggly patterns. They look VERY similar to the *pattern* of the aura I see right before I get a migraine. If they were opalescent, and flashed like TV static, they'd be identical.
@RIXRADvidz2 жыл бұрын
When that last bong hit suddenly hits and your brain opens to the Universal Constant. Then you see everything as it is and are able to translate it down into alternate dimensions.
@ga57122 жыл бұрын
Wow. Hard to get your head around this.. but watching it makes me wonder if the universe is a knot
@saulschleimer20362 жыл бұрын
There are papers that discuss the "global topology" of the three-dimensional universe. In particular Jeff Weeks has papers on this, and he raises the possibility that the universe is "hyperbolic". He discusses the "circles in the sky" technique (that is, patterns of correlations in the cosmic background radiation) for determining the "global topology". Unfortunately, it seems that these circles are absent...
@jacobcowan35992 жыл бұрын
To the uninitiated eye, a slice of this approximation around one of those focal points looks quite a bit like cabbage
@eragonawesome2 жыл бұрын
I would love a much more scripted version of this same video, maybe even as a series, which goes into more of the fundamentals to help those of us without a topology background to understand a bit better what we're looking at
@DavidRutten2 жыл бұрын
This is a good video, or rather, this is an approximation of a good video. I'm sorry, that sounded like I'm dissing you...
@ts4gv2 жыл бұрын
1:23 you got me, that’s exactly what i was thinking 😂
@TheBookDoctor2 жыл бұрын
That's wildly cool.
@MushookieMan2 жыл бұрын
I more or less understand what a universal cover is from flying inside manifolds, are there any animations of what the heck the universal cover of a knot complement is?
@saulschleimer20362 жыл бұрын
I recommend the video "Not knot" by the geometry centre. kzbin.info/www/bejne/apKxZ6mObNaLhrM
@henryseg2 жыл бұрын
The video "Not Knot" from the Geometry Center goes into this. A knot complement doesn't act very differently from any other manifold when you take the universal cover. The main issue I think is understanding where the knot goes. Since the knot isn't inside of the knot complement, it "vanishes off to infinity"...
@leif10752 жыл бұрын
@@henryseg Wjst exsctly does fibered mean for the knkt co.plement..since it is a continuous smooth surface not sure what this means if you could clarify..
@leif10752 жыл бұрын
@@henryseg At the end did you mean the second shape is made of MULTIPLE ofnthise figures as opposed to just one? If I understand correctly..thanks for sharing..
@saulschleimer20362 жыл бұрын
@@leif1075 "Fibered" means "locally of the form a plane cross an interval". Consider three-space - it is fibered by planes parallel to the xy-plane. This is the "local model" of a fibered three-manifold.
@makegrowlabrepeat2 жыл бұрын
Is this the secret to a high score in Snake?
@dane5624 Жыл бұрын
As brilliant as these fine gentlemen are, I thought they could explain this in a less chaotic way. It's all good. I get it.
@saulschleimer2036 Жыл бұрын
We are just excited to be alive. :)
@NonTwinBrothers2 жыл бұрын
How long did it take the CNC machine to make those posters?? Seems like a very long operation if it has to go through all that path
@henryseg2 жыл бұрын
Each one ran overnight, taking around 16-20 hours.
@poobertop2 жыл бұрын
It's crazy to think how DNA imbeds such space filling calculations.
@titaniumtomato72472 жыл бұрын
Cannon-Thursten maps: its morbin time
@stevenmayhew39442 жыл бұрын
They look similar to the Julia sets, cousins of the Mandelbrot set.
@saulschleimer20362 жыл бұрын
There is a "dictionary" of kinds between holomorphic dynamics and Kleinian groups. One of the main proponents of this is Dennis Sullivan. There is a nice blog post on this by Yankl Mazor. At a more advanced level, there are many research papers, including early ones by Sullivan.
@eyedl Жыл бұрын
whoa, and that was only 10 minutes, awesome
@MrDaraghkinch Жыл бұрын
Me: "Ooo, fractals, I get this." These guys: "Lift the knot compliment to the universal cover". Me: I am a fucking baby.
@Jason-bb9vi Жыл бұрын
Wow you just dashed a bit of false humility into a bowl full of modesty and did so without competition . By denying competing , you have implicated complementation which is equivalent to bettering the best . Which is to say, growth has occured in your ontological efforts , which is to say , stay the course, the same shall stay forever young. .
@MrDaraghkinch Жыл бұрын
@@Jason-bb9vi I understand, thanks Jason.
@Jason-bb9vi Жыл бұрын
@@MrDaraghkinchthank you. Seriously, you have an amusing way with descriptive words. Thanks for making this even more entertaining . It really was fairly mind blowing to see someone rock this particular field of study to this extent so .really could relate , certainly felt the same way.for the most part
@danielhmorgan2 жыл бұрын
phenomenal
@remingtonleeman2 жыл бұрын
I feel like I met these guys at a diner and asked what they do for a living
@bhante13452 жыл бұрын
The thumbnail made me instantly think of M.C. Escher.
@MySelfMyCeliumMyCell Жыл бұрын
crinkly discs are amazing
@jjaapp182 жыл бұрын
This is why most KZbinrs set up a script to follow, so you're not rambling
@henryseg2 жыл бұрын
Usually we would have, but it was a last minute decision to make this video. We had half a day of prep and one day to film.
@saulschleimer20362 жыл бұрын
I tried to write a script on the train-ride over; but it was bad and also much too long... We did try!
@hkayakh Жыл бұрын
I wouldn’t say they’re approximations. If you zoom in on a Hilburt curve forever, you’lol see the original lines. The cannon-thruston maps you have are steps to the final curve
@Veptis Жыл бұрын
space filling curves can also be generalized to different ways of traversing high dimensional latent space of any kind of auto encoder network.
@elijahmitchell-hopmeier1822 жыл бұрын
I'm not smart enough for this. Still great video. It was really pretty to watch
@johnnyswatts2 жыл бұрын
Interesting content, confusing and chaotic presentation.
@Kroggnagch Жыл бұрын
I don’t know the geometry well enough to understand half the stuff you guys say. I have much to learn yet...
@Jason-bb9vi Жыл бұрын
I noticed someone was cool enough to comment with , "thank you." And I gotta say , that thank you was not without value , but rich and effective in it's purpose. Or so it would seem .
@FelipeHoenen2 жыл бұрын
Okay. I'm not a math genius. Of course, this is still extremely interesting. But I had an idea about laser cutting puzzle pieces which might be used to build a map, but not in just one way. Many possible maps. A design method that would let me have some organic looking variations of interlocking pieces that could form a fantasy world map that could be a game in itself to assemble (think Mappa Imperium) I'm really having a hard time finding out where to begin. Two mathematical concepts that appear useful to me are Voronoi maps and now this. Anyone got ideas about how can I put this together? Leverage Math and Computers to design this puzzle?
@henryseg2 жыл бұрын
Nervous system (n-e-r-v-o-u-s.com) make beautiful laser cut jigsaw puzzles with a very organic feel. They use various biologically inspired iterative methods to generate their piece boundaries. Saul and I have thought about jigsaw puzzles made from C-T maps, unfortunately we get very pointy pieces that won't work well as a physical puzzle.
@unfa00 Жыл бұрын
I have absolutely no idea what I'm looking at :D
@TesserId2 жыл бұрын
This the first time that I've taken proper notice that the true Hilbert curve involves a limit. So, if I understand correctly, the true Hilbert curve occupies all the points in a plane. Now I'm trying to imagine a 3D Hilbert curve, which seems possible. What about N dimensions? Oh, I just noticed that 3Blue1Brown has a vid on the Hilbert curve. Watching that now.
@saulschleimer20362 жыл бұрын
Yep - they exist in all finite dimensions. And in some infinite dimensions. Check out the mathoverflow post "Are there space filling curves for the Hilbert cube?"!
@TesserId2 жыл бұрын
@@saulschleimer2036 Bang. Hilbert cubes. Thank you so much. Will, search immediately.
@Life_422 жыл бұрын
6:20 beautiful!
@Unmannedair2 жыл бұрын
That looks like stress diffraction in transparent solids.
@kriterer2 жыл бұрын
This might be a dumb question, but, since they should contain all of the same points when represented as sets, how do we/can we actually distinguish between a randomly filled plane and a complete, filled tiling of Cannon-Thurston maps? Is there even a point to differentiating between the two planes?
@henryseg2 жыл бұрын
The difference is that there is an order in which the map visits each point of the plane. You can see this most clearly with the Hilbert curve example: in every approximation to the Hilbert curve you see the polygonal curve goes from lower left to upper left, then upper right then lower right. So in the limit, the Hilbert curve visits the quarters of the square in that order.
@jounik2 жыл бұрын
@@henryseg So if I understand correctly, the map is a set with extra structure (i.e. a strict ordering) and to represent it as a plain old set loses that salient bit of the mapping.
@henryseg2 жыл бұрын
@@jounik Right. The "mapping" is a map (a continuous function) from the circle to the plane (actually the sphere).
@GiftFromGod Жыл бұрын
came here out of curiosity about the image(s) and here at the end I can confidently say that I barely understood anything xD very interesting stuff though!
@deebznutz1002 жыл бұрын
I'd like to experience the crinkly spaces in VR
@Xyabra2 жыл бұрын
I wonder what a 3D one would look like
@saulschleimer20362 жыл бұрын
Great question. There is no two-sphere filling a three-sphere which is invariant under a uniform kleinian group. (This is an "easy" Euler characteristic computation.) The existence a one-sphere filling a three-sphere, invariant under a uniform kleinian group, is open. However expert opinion seems to be that such things do _not_ exist.
@saulschleimer20362 жыл бұрын
Here are mathoverflow references - for the first we have 142621 (Hyperbolic Manifolds which fiber over the circle) and for the second 66000 (F→E→B bundle with B,E,F hyperbolic: possible?)
@Xyabra2 жыл бұрын
Every 2D is just on a single dimension so if there was a 3D, the look of it would intrigue me. How X Rays can show a person from only a 2D piece at a time, that is what I want to see with this. It would be like uncovering a 4D art piece
@saulschleimer20362 жыл бұрын
@@Xyabra I agree it would be cool. I don't think that there are examples (in 3D) similar to what the video is about. However, there is some amazing (and related) work of Vladimir Bulatov on three-dimensional "kleinian limit sets".
@gregsLyrics Жыл бұрын
Fascinating. I think you have inadvertently described the mitochondria's cristea in biological nature. Makes me wonder about curve fitting what nature has made for all humans.
@Jason-bb9vi Жыл бұрын
"Complimenting" is such a rich word, as it's value is potentially priceless, as it cancels out such ease -dissing polarizations , such as the ultra negative heavily accepted common killer, "compete" and "competition." Which seemed to try and surface as the words "stuck with," was used in A way that suggests that Cannon Thurston is anything other than the most complimentary name possible considering the thirst of those that wish to speak and or read only canon subject matter. Strangest thing, this came on as I was drawing a set of 3 which makes obviously a triangle , I wrote quantizing quantization and began considering directions that are possible to have the 3 exchange a ? Charge , or discharge perhaps or maybe both satisfy the thirst all things canon. So even though there are only 3 in triangular formation , either way the hot potato is passed , it's up or down and side to side . So then we see four 4 possibilities for 3 positioned power places ? Points I'll say, which is interesting . So I drew arrows from each point showing all possible relations from the 3 points with 1 interest. (This would be so much better if I could send the picture itself .) So the end of each arrow is, as you know, defined by the two lines from the point of reference slightly angled downward , right? Right. So rather than end it at the points I passed the points so I could end up with basically 3 boxes as the points but with a flat side missing, so then theyre not really boxes but U-shaped with each opening facing the center? Oh I see the problem now, there is no common ground to represent any center. I was confusing myself and even let that what should've been obvious , get passed me all in effort to make it geometrical .and yet I still think there is something spectacular to be reckoned with if by any chance anyone might possibly understand what it is I'm saying . In my defense what can you expect from someone like me who was born in a dessert and raised in a lions den.? .
@namelessxdread Жыл бұрын
Are you a bot
@Jason-bb9vi Жыл бұрын
@@namelessxdread how bout you Doc,? Are you a wave or a particle?