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gerw's user avatar
gerw's user avatar
gerw
  • Member for 11 years, 3 months
  • Last seen this week
35 votes
Accepted

Why weak convergence doesn't imply convergence?

24 votes
Accepted

Can a subspace have a larger dual?

18 votes
Accepted

Constrained variational problems intuition

16 votes
Accepted

How do you prove that $\{ Ax \mid x \geq 0 \}$ is closed?

13 votes
Accepted

Are the eigenvalues of the sum of two positive definite matrices increased?

11 votes
Accepted

If a normed space $X$ is reflexive, show that $X'$ is reflexive.

11 votes

Product of $L^2$ functions

10 votes

sequentially continuous on a non first-countable

8 votes
Accepted

Linear Transformation of Closed Convex Cone

8 votes

Is every open set the interior of a closed set?

8 votes

Existence of minimizer for strongly convex function on closed, convex set

8 votes
Accepted

Does $C_c(X)$ separate points in $X$ when $X$ is a Banach space?

7 votes
Accepted

Does $P \circ P =P$ and $\langle Px, y \rangle = \langle x, Py \rangle$ imply $P$ is linear?

7 votes
Accepted

Does a convex quadratic program have a unique solution?

7 votes

Extension of bounded convex function to boundary

7 votes
Accepted

Is closed convex set with finite number of extreme points convex polyhedron

7 votes

Can a function be continuous at only one point in its domain and discontinuous everywhere else

7 votes

When do two functions have the same subdifferentials?

6 votes
Accepted

The dual space of a product space

6 votes

Deriving the sub-differential of the nuclear norm

6 votes

Differentiating a boundary condition at infinity

6 votes

Why does Wolframalpha think that this sum converges?

6 votes
Accepted

Integral as a member of the closure of the convex hull of the integrand

6 votes
Accepted

Weak-* Convergence of functionals defined by probability measures $\{\delta_n\}$

6 votes

Example of function in L2 but not in H1

6 votes

Minimisation of Energy Functional

6 votes
Accepted

Existence of minimizers for convex functions in infinite dimension

6 votes
Accepted

What is the orthogonal complement of $H^1_0$ in $H^1$?

6 votes

Reason for the term "smooth"

6 votes

Proof that the following map $\Phi:\ell^1\to(\ell^\infty)'$ is not surjective

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