DBS's user avatar
DBS's user avatar
DBS's user avatar
DBS
  • Member for 10 years, 11 months
  • Last seen more than 4 years ago
5 votes

A spectral sequence for Tor

4 votes

Hecke operators on modular forms

4 votes

definition of convergence of a spectral sequence

4 votes
Accepted

Topology and commutative algebra.

4 votes
Accepted

Vector Bundles: Continuity of map between total space implies homeomorphism.

3 votes
Accepted

Evaluating $\mathbf{\lim_{(h_1, h_2)\to (0,0)}\frac{\sqrt {|h_1.h_2|}}{\sqrt {h_1^2+ h_2^2}}}$

3 votes
Accepted

Relation between de Rham cohomology and integration

3 votes

How find this $\ker\sigma_{A}\cap \operatorname{Im}\sigma_{A}$

2 votes

Cup product and hypercohomology

2 votes
Accepted

Image of a line or conic on Veronese surface.

1 vote

Coefficents of cubic polynomial and its least root

1 vote
Accepted

On the assumptions of cocyle conditions in a Lie algebra

1 vote
Accepted

Finding non trivial Idempotents

1 vote
Accepted

Elementary questions on ample invertible sheaves

1 vote

nilpotent transformation properties

1 vote

Closure of a certain subset in a compact topological group

1 vote
Accepted

Question on banach space over an extension of $\Bbb{Q}_p$

1 vote
Accepted

If $\tan A=2$, find the possible values of $\csc A$

0 votes

Quotient presheaf is a sheaf for flasque subsheaf

0 votes

Proof $\prod_{j=1}^{n}\sum_{x_j \in A_j} x_j=\sum_{x_j \in A_j, \cdots, x_n \in A_n } \prod_{j=1}^{n}x_j$

0 votes

Prove a specific Cartan matrix is positive definite

0 votes

Is the definition of limits valid when talking about discret functions

0 votes

Order of math operations

0 votes
Accepted

Show that $ \exp \left(\mathfrak{sl}(2,R)\right)$ is the set of all matrices with positive trace $\geq -2$

0 votes
Accepted

About birational map between curves of the form $y^{2}=g(x)$