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visits member for 2 years, 8 months
seen Dec 4 at 15:30

Nov
27
accepted Show that $\operatorname{Hom}(S(-d),S)\cong S(d)$ where $S$ is polynomial ring?
Nov
27
asked Show that $\operatorname{Hom}(S(-d),S)\cong S(d)$ where $S$ is polynomial ring?
Nov
26
comment Visulizing column/row space and null/left null space, A and x
I didn't understand what you want!
Nov
26
accepted Cohomology groups of coherent sheaves for very small and very big twists.
Nov
26
answered Cohomology groups of coherent sheaves for very small and very big twists.
Nov
23
comment Cohomology groups of coherent sheaves for very small and very big twists.
I searched it, and the theorem says there is $m_0$ such that for all $m \geq m_0$ we have $\mathcal{F}(m)= \mathcal{O}(m) \otimes \mathcal{F}$ is globally generated, and your answer is exactly that by induction. I wish that you recommend me a book to source to read how globally generating would imply that $\mathcal{F}(m)=0$.
Nov
23
comment Cohomology groups of coherent sheaves for very small and very big twists.
Thanks Alex for comments, I will follow them, but I have a question, is $m$ in your comment unique, and does $\mathcal{O}(m)\otimes \mathcal{F}$ globally generated implies that $\mathcal{O}(m+1) \otimes \mathcal{F}$ is globally generated. because one asks what if $m$ in your comment is less than $d$ for which $h^0\mathcal{F}(d)= 0$.
Nov
23
comment Cohomology groups of coherent sheaves for very small and very big twists.
Answering the question above will help to answer my previous question. math.stackexchange.com/questions/1032287/…
Nov
23
asked Cohomology groups of coherent sheaves for very small and very big twists.
Nov
22
revised Question about Tate resolution and cohomology groups of nonzero coherent sheaves.
edited body
Nov
21
asked Question about Tate resolution and cohomology groups of nonzero coherent sheaves.
Aug
31
comment definition of Krull dimension of a module
dim(M)= dim( Supp (M)) as an algebraic variety in Spec(R)
Jul
2
awarded  Curious
Jun
21
revised formulate this scheduling problem as linear programming problem
deleted 17 characters in body
Jan
14
asked The Existence of Pure Resolutions, Given a Degree Sequence?
Jan
5
revised Question about closed subsets of a root system of a vector space?
edited title
Jan
5
asked Question about closed subsets of a root system of a vector space?
Dec
7
asked Contructing elements of a partially ordered set of increasing integer sequences?
Nov
23
accepted Minimization of $log_{a}(bc)+log_{b}(ac)+log_{c}(ab)$?
Nov
18
asked Minimization of $log_{a}(bc)+log_{b}(ac)+log_{c}(ab)$?