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@garrettsmith2825
@garrettsmith2825 7 жыл бұрын
Thank you for posting such clear and thorough lectures!
@abstract835
@abstract835 7 жыл бұрын
such clearity=========
@Alkis05
@Alkis05 7 жыл бұрын
This guy deserved a better cameraman. He didn't aim the camera on the professor during the whole intuitive explanation of what is a bundle.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
Interesting points about the sociology of large physics projects, and about the military holding up gamma ray discoveries.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
It's a shame this lecture cuts off at the end.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
"He just looks, and you're dead!"
@rahnumarahman6227
@rahnumarahman6227 7 жыл бұрын
Can anybody kindly tell me what literature is being followed here.......the lecture is great but It helps having a literature reference that you can look at.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
I'd like to keep my nose, thanks.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
I love that he had to clarify the stone has no free will, in case anyone was confused.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
This man crafts his lectures from diamonds. He even has board cleaners!
@md2perpe
@md2perpe 7 жыл бұрын
"What brings you closer to God? A Hamiltonian!" :-D (@1:15:10)
@karimsouidi1
@karimsouidi1 7 жыл бұрын
This is one of the best lectures ever !
@drlangattx3dotnet
@drlangattx3dotnet 7 жыл бұрын
I am a hobbyist who never graduated college 40 years ago but I never lost my interest in math and physics. Yes sir, Professor Schuller. You are a very good teacher. THis is very special to us, your students. Thank you.
@drlangattx3dotnet
@drlangattx3dotnet 7 жыл бұрын
Terrific instructor. Thank you sir.
@snaqvi69
@snaqvi69 7 жыл бұрын
Thanks for going out of your way to build physical intuition in the abstract concepts. Hallmark of a great teacher!
@viveknsharma
@viveknsharma 7 жыл бұрын
Fantastically Well-Planned!
@arshnoorie
@arshnoorie 7 жыл бұрын
Thank you so so much for such wonderful lectures. Your very great clarity about our imagination and the real world and the way you explained it was hugely motivating..
@吉田新一-l5w
@吉田新一-l5w 7 жыл бұрын
he is genius
@theleastcreative
@theleastcreative 7 жыл бұрын
This whole lecture series is amazing
@pianoman1857
@pianoman1857 7 жыл бұрын
For the first example how can he define the set P as linear combinaison of whatever element whithout define an add and mult law on x^n ?
@theleastcreative
@theleastcreative 7 жыл бұрын
Is there somewhere that the tutorial papers can be downloaded from? I'd love to print them off and work through them.
@xxqq96
@xxqq96 7 жыл бұрын
What is the prerequisite for this course?
@theleastcreative
@theleastcreative 7 жыл бұрын
Did anyone attend this and still have the questions from the tutorials?
@theleastcreative
@theleastcreative 7 жыл бұрын
Did anyone attend this and still have the questions from the tutorials?
@nahakuma
@nahakuma 7 жыл бұрын
Maybe you refer to these ones: gravity-and-light.herokuapp.com/tutorials
@theleastcreative
@theleastcreative 7 жыл бұрын
you're amazing!
@think2086
@think2086 7 жыл бұрын
I agree with the commentators below. He is an incredible educator. His presentations are super crisp and efficient. Thank you for posting these! Deeply appreciated.
@think2086
@think2086 7 жыл бұрын
For the circle to polar coordinates part, correct me if I'm wrong, but I think why people got confused is because arctan is defined only on the RIGHT hemisphere of the circle, with asymptotes on the output of arctan at -pi/2 and pi/2, so y(U) would only map between -pi/2 and pi/2 (180 degrees total) instead of from 0 to 2pi (360 degrees total). The line he removed in the domain should have been the VERTICAL axis (m=0), not the horizontal axis (n=0), to avoid dividing by zero in the ratio m/n. The other big problem with arctan is that it takes a single number, which is usually our ratio n/m. But if both n/m are negative, your result is positive. If either one of them is negative, than the result is negative. So there is information loss. Quadrant I and III look the same to arctan, as does II and IV. To go beyond this to map the entire circle to polar coordinates and use all of 0 to 2pi, you need more than just arctan... you need a sort of "enlightened" arctan that takes TWO parameters (so that the ratio m/n doesn't hide which of m or n is negative), or you need to do it piecewise with conditions that separate the four quadrants so you can treat quadrant I and quadrant III (both of which give m/n positive), and quadrant II and quadrant IV (both of which give m/n negative) distinctly. The two parameter version of arctan is better though as it also avoids the divide by zero issue (you pass in m and n separately, so no need to worry about n/m with m=0), which then allows you to avoid removing the m=0 line in the domain. In standard programming languages, this is called atan2(m, n). He should have used this instead of arctan to avoid all these issues. Or am I missing something?
@rishabhkumar9587
@rishabhkumar9587 7 жыл бұрын
Exactly what I was thinking! Atan2(n, m) is exactly what is used in complex analysis for the definition of the argument of the complex number.
@antoniolewis1016
@antoniolewis1016 7 жыл бұрын
You are correct. Though if he had gone for a polar theta region of 0 to pi, it would have also worked.
@vs-cw1wc
@vs-cw1wc 7 жыл бұрын
The expression for 3-velocity written down at 1:24:56 is not the correct form. The right hand side should be divided by the gamma factor.
@md2perpe
@md2perpe 7 жыл бұрын
No, the gamma factor is implicit in epsilon.
@leanhdung9848
@leanhdung9848 7 жыл бұрын
Very interesting and inspiring lecture.
@vs-cw1wc
@vs-cw1wc 7 жыл бұрын
I like how they made an effort in showing the students' questions in text. Very sweet.
@RalphDratman
@RalphDratman 7 жыл бұрын
Superb lecture
@rubenlimasca4488
@rubenlimasca4488 7 жыл бұрын
Muy fácil.
@skun406
@skun406 7 жыл бұрын
Thanks for uploading those lectures.
@leebill109
@leebill109 7 жыл бұрын
Very nice lectures
@travellcriner6849
@travellcriner6849 7 жыл бұрын
I'm definitely a huge fan of these lectures and the amazing strength of intuition utilized. My hunger to learn is awakened by these lectures. I have to say though, I'm not a huge fan of the "noses" analogy. I think it hinders the talk of dimensionality especially around 29:00 .
@miz4535
@miz4535 7 жыл бұрын
Can someone explain how he obtained the second derivative at 35:00?
@brucexing6954
@brucexing6954 7 жыл бұрын
Because the components of the vector field r(t) along r are dxi/dt
@brucexing6954
@brucexing6954 7 жыл бұрын
using coordinate x1,…xn
@lokendrasunar5457
@lokendrasunar5457 7 жыл бұрын
Great dedicated professor.Very comprehensive lecture .Lucky me.
@eenblanke
@eenblanke 7 жыл бұрын
Fantastic lectures! This is the way it should be done . So clear, concise and even entertaining at time. German efficiency and thoroughness shows through. Thanks so much to the folks that posted it
@amudan83
@amudan83 8 жыл бұрын
This is a really beautiful and insightful interpretation of Newton's laws. Thank you so much Prof. Schuller!
@Rubbergnome
@Rubbergnome 8 жыл бұрын
Wow. This lecture blew my mind. Awesome, I gotta check out this line of research!
@josephavant8250
@josephavant8250 8 жыл бұрын
This professor is EASILY one of the best I've ever seen - every student should be so lucky to study from such an articulate, patient, and clear instructor at some point in their academic career!
@luke001
@luke001 8 жыл бұрын
I thought that the tangent spaces TpM for all point p in a manifold M were automatically disjoint, ie they dont share any elements.
@travellcriner6849
@travellcriner6849 7 жыл бұрын
You're correct, although some elements of TpM may look like elements of TqM. I believe the point here is to emphasize that they're not the same even though they look the same. I'll explain: 1) Recall our definition of an element of TpM, namely a velocity v_r,p(f) where r is a curve on M through p and f is in C^inf(M). I like, in this respect, to think of C^inf(M) as a collection of all possible landscapes over M. Then v_r,p tells us the change in height we'd feel over any inputted landscape taking the particular curve r through p. So really, v_r,p is a collection of rises/falls. 2) It's conceivable that TpM and TqM may appear to have some shared collection of rises/falls. Even if that's the case, we understand these collections (the velocities) are to be thought of as totally different -- for one is only relevant to the point p and the other to the point q. 3) Imagine I wanted to create a set containing a '1' for every star in the observable universe. You might try unioning lots of copies of {1} together. But {1}U...U{1} = {1}, because sets don't care for repetitions. To get around this, we may secretly add a bit of information about the star into each of the 1's and publicly refer to the unions as disjoint unions. I'm pretty sure this is the idea behind him stressing disjoint union. I would appreciate if someone with more expertise confirmed or correct this idea, and I hope I helped as well.
@MrAkashvj96
@MrAkashvj96 7 жыл бұрын
Yes you do not have to worry about disjoint condition in this case because it comes implicitly.
@wschadow
@wschadow 8 жыл бұрын
A crystal clear series of lectures, thank you!
@EarlWallaceNYC
@EarlWallaceNYC 8 жыл бұрын
I'm loving these lectures. They are rigorous, well organized and entertainingly presented. Where else can I find a reverence to Machiavelli in advanced mathematics.
@evilcman
@evilcman 8 жыл бұрын
Does anybody have the exercise sheets?
@oliversimpson730
@oliversimpson730 8 жыл бұрын
Hi, I am struggling to prove that the map G is multilinear. Where does v,w and x fit into the vector space, are they each vectors or components? The map is defined using a1, b1,..., c2. What are these entries is terms of v, w, x? I understand what is to be proved I am just struggling to go through the necessary steps.
@time_traveller24
@time_traveller24 8 жыл бұрын
Thank you sir...your lectures were extraordinary
@giannisniper96
@giannisniper96 8 жыл бұрын
what did he do at 17:25? what's g(delta_x, gamma_dot)?
@MaxwellsWitch
@MaxwellsWitch 8 жыл бұрын
I love it when you give the axioms first before you start calculating shit, that removes ambiguity and confusion. thx m8.
@amolvaidya06
@amolvaidya06 8 жыл бұрын
dx2/dy1 has me a bit confused on problem 3. Should it be -3a^2? The way I'm interpreting the symbol is that the second component of x o y^-1 should be derived with respect to u. Is this not correct?
@amolvaidya06
@amolvaidya06 8 жыл бұрын
He fixes the mistake just a few minutes later.
@52wtf
@52wtf 8 жыл бұрын
For anyone interested in the problem sheets: gravity-and-light.herokuapp.com/tutorials