https://www.youtube.com/watch?v=H1xe9g3dJCg Sheaf Regular functions Harpreet Bedi2012/12/26 に公開 We describe the sheaf of regular functions, and prove gluing and restriction conditions. コメント Ron Erez5 年前 Hi. Really great lectures. I do have a question. I've been using a bamboo tablet to teach lectures. I'm curious as to what program your using and more importantly how large is your computer screen?
https://www.youtube.com/watch?v=WZ1dYKsAF60 Ideal Sheaf Harpreet Bedi2012/12/17 に公開 We describe the Ideal Sheaf コメント tomuf2 年前 You define O_Y(U) = O_X(Y \cap U) for Y a closed subset. But aren't the sections of sheaf O_X defined only on open sets? It is not clear to me that Y \cap U is open in X for Y a closed subset.?
https://www.youtube.com/watch?v=hmGX0LV5Lb4 Acyclic Sheaves and Cohomology Harpreet Bedi2012/12/21 に公開 Compute cohomology using flabby resolutions. Ref: Algebraic Varieties (Kempf), Part III notes(Burt)
https://www.youtube.com/watch?v=1hWJaoA2Az8 Cech Cohomology Motivation I Harpreet Bedi2014/01/23 に公開 Ref: 24 hours of Local Cohomology コメント MAPPLE2 年前 a question, the sheaf, at the beginning, is only defined for U1 and U2, but not for their intersection, right And because of properties one can say that the sheaf at U12 is the direct sum of 2 copies of Z.Thanks?
