My favourite part of this series is learning the words for technical math concepts in Japanese, I've always been interested in learning how technical concepts get translated to other languages. Apparently "shugo" means set
@DareFrosted5 ай бұрын
It's the same for me but from Spanish to English. I'm a native spanish speaker, so with this series I'm learning how some technical concepts get translated to English like set (that in Spanish is "conjunto")
@Lion-Himself5 ай бұрын
this is a new era for online education
@notaname3205 ай бұрын
I'm a math student from Canada, thanks for the English sub, enjoyed this video.
@藤田りょう-r4p5 ай бұрын
濃度の部分に、いい感じの定義を持ってきているところが、すごい!
@alphagamer70585 ай бұрын
we definitely need real analysis lectures from them!
I wish one of these videos could be a submission for 3b1b's Summer of Maths Expositions in the future. Granted I've not thought of it that much, but this is the first time I've seen the diagonal argument used to prove that _any_ power set of a set has greater cardinality than the set itself. It's pretty obvious in hindsight. Good video!
@Ny0s5 ай бұрын
What a great channel to motivate one to learn japanese! Thank you very much for the subtitles, and your work. One new subscriber for you!
@白月ろま5 ай бұрын
無限を超える無限よりこの動画に英語コメがあるのが不思議 なぜ外国人が日本語の数学動画にいるんだ…
@mars_titan5 ай бұрын
Because of English subtitles
@molecular_science-vx7qh5 ай бұрын
今回のは一回見ただけではついていけなかったので何度も見返します。
@hqTheToaster5 ай бұрын
I think I found the favorite of your series. And I haven't even went through the entire rabbit hole. Good job.
Hey would like to genuinely thank you for these videos, been struggling a bit with math classes and you've been helping a lot by making the ideas simple and fun to learn haha. Keep up the good work!
それは通常のベルンシュタインの定理なので選択公理は必要ありません. ただし,選択公理を「使っても」証明できます.実際,カントールの初期の証明は選択公理の前提の元で証明したものだったとされています. 後に選択公理のないZやZFで証明可能なことが確かめられ,その後は証明のあとに「選択公理を使っていないことに注意」というただし書きが添えられることが多くなりました. よく似たもの(ヴァリアント)で,「全射 f : A → B , 全射 g : B → A が存在するなら, AとBに全単射が存在する(つまり|A| = |B|)」という,ベルンシュタインの定理の前提部分の「単射」を「全射」に置き換えた定理がありますが,こちらは証明に選択公理が必要です.しかも可算選択公理や従属選択公理では足りず,Z(F)ではフルの選択公理がないと証明できない事がわかっています. ただし,従属選択公理から選択公理の間にその中間的強さの類似定理(公理)が存在するのか,真に選択公理とベルンシュタインの定理のヴァリアントとが同値なのかは,未解決問題です.(例えば,後者でないなら,ベルンシュタインの定理のヴァリアント自体が,従属選択公理と選択公理の中間の強さの選択公理の類似物の候補になります.)
@jalmar402985 ай бұрын
@@saundersN 独立選択公理って何?従属なら知ってるけど
@saundersN5 ай бұрын
@@jalmar40298 ほんとだ指摘ありがとう。 修正しとく。
@kevinjames44065 ай бұрын
Ahora mismo estoy estudiando la carrera de matemáticas; y áreas como la teoría de conjuntos me han apasionado enormemente y hasta el dia de hoy, tanto que cuando estaba en la secundaria demostré a mi clase que los naturales tienen el mismo cardinal. Cuando mire el video por el tema y por las bromas en el me hicieron recordar cuando mis compañeros escucharon por primera vez esas ideas tan locas para alguien que es primerizo; pero sobre todo cuando lo experimente por primera vez escuchar esas ideas sobre los conjuntos infinitos, en su momento realmente fue algo indescriptible para mi y esta lleno de recuerdos muy especiales, te agradezco por haberme hecho recordar esos momentos tan importantes. Algo que realmente me encanto del video es que es muy reciente, este es el segundo que descubro tuyo y estaré esperando ansioso por el siguiente. Sigue así 😃.
@kevinjames44065 ай бұрын
Espero haberme explicado bien, y ojala poder ponerlo en ingles pero aun no soy tan bueno. 😅
@DareFrosted5 ай бұрын
I really like seeing your videos. I'm learning a lot and having fun and the same time!
@wigffds7374Ай бұрын
無限の先にある無限に震えた高校3年の夏。 今から30年前のこと。
@zoruax72 ай бұрын
I'm a math student in France, i just love this so much, this made me want to continue studying japanese
@apppples4 ай бұрын
idk why these videos capture the wonder and magic of first studying math so well, but i'm loving it
@satocha12385 ай бұрын
X1とX2の間の濃度を取る集合は存在しますか
@ならずもの-v5b5 ай бұрын
サムネのアイデアにやられた。素晴らしい。
@terdragontra89005 ай бұрын
Ah yes, Cantor’s Theorem is my favorite theorem, shocking and beautiful and the proof is surprisingly short.
@neopalm20505 ай бұрын
I think the most surprising thing about diagonal arguments is how different from each other they can look before you see the similarities.
@jalmar402985 ай бұрын
濃度の定義は難しい
@proximitygaming82535 ай бұрын
im blessed to live in a time where anime girls teach math
@y_nene10 күн бұрын
同じ対角線論法でNより大きいと証明される2^NとRの濃度は同じなのかちょっと気になる
@egohicsum5 ай бұрын
both your math and art is impeccable. thank you so much
I really like your videos, you really deserved a subscribe! (I subscribe you because I love math things) I have a question for you: what’s 1^(-i)+2^(-i)+3^(-i)+… or ζ(i) equals to?
@sheepcommander_5 ай бұрын
this was really cool!!!
@bulletprooves5 ай бұрын
I love this channel. I can take both Liberal Arts that Japanese and mathmatics from this video. ദ്ദി◍•ᴗ•◍)
I'm nowhere near the level of math to understand this, but I'll study hard...
@ElusiveEel4 ай бұрын
set theory is pretty much it's own thing, it's taught with discrete math at uni but to my understanding doesn't have anything to do with any surface level math aside from combinatorics