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追加 Limit関係
https://www.youtube.com/watch?v=Agn5LBN0mFk
Stalks and Direct Limit
Harpreet Bedi2012/12/03 に公開
Start with definition of direct limit and construct very important examples of stalks from the definition. Definition of Birational varieties is also given.

https://www.youtube.com/watch?v=1HLMybWdBJA
Direct Limit
Harpreet Bedi2017/04/06 に公開
コメント
沈嘉?1 年前
I had trouble in understanding the equivalence of defining a stalk at a point through direct limit and through germs . Now I get it! Thank you!

https://www.youtube.com/watch?v=JGbMji_4Xic
What is Direct Limit?
Harpreet Bedi 2012/09/16 に公開

https://www.youtube.com/watch?v=8pr8vqEL8Xg
Direct Limit (Mapping Telescope, Construction of Rational Numbers)
Harpreet Bedi2014/01/24 に公開
Construction of Rational Numbers via direct limit, copied from Hatcher section 3F.

https://www.youtube.com/watch?v=JrFSoHzb24w
InverseLimit
Harpreet Bedi2017/08/30 に公開