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me10240
  • Member for 9 years, 7 months
  • Last seen more than a week ago
  • College Station, TX
11 votes
1 answer
280 views

$\dfrac{\partial^2 f}{\partial x \partial y} = 0 \nRightarrow f(x,y) = g(x) + h(y)$

6 votes
3 answers
2k views

Question on upper triangular matrix with complex eigenvalues with modulus less than 1

6 votes
1 answer
966 views

Proof that eigenvector corresponding to simple eigenvalue is continuous

6 votes
2 answers
5k views

Derivative of the matrix exponential with respect to its matrix argument

5 votes
1 answer
1k views

Inferring Jordan Block structure from dimension of null spaces

4 votes
1 answer
2k views

Does elementwise matrix inequality extend to norms?

4 votes
2 answers
1k views

Does Closed Graph imply Closed Range

4 votes
2 answers
942 views

Derivation of Euler-Lagrange equation

4 votes
1 answer
527 views

Dual map is zero if and only if map is zero

3 votes
2 answers
895 views

inverse function theorem and matrix square root

3 votes
1 answer
615 views

asymptotic expansion for integral when integrand is function of limits

3 votes
1 answer
717 views

does invertibility of product imply invertibility of each term of product?

3 votes
0 answers
1k views

Equivalence of matrix norms

3 votes
1 answer
846 views

Does the concept of submultiplicative norm make sense for non-square matrix?

3 votes
2 answers
683 views

Lagrange multipliers - confused about when the constraint set has boundary points that need to be considered

2 votes
1 answer
149 views

Stuck on proof: If image of gauss map of connected n-surface is single point on the unit n-sphere, S must be a hyper plane

2 votes
1 answer
800 views

Making sense of matrix derivative formula for determinant of symmetric matrix as a Fréchet derivative?

2 votes
3 answers
422 views

Can derivative formulae in Matrix Cookbook be interpreted as Frechet derivatives?

2 votes
1 answer
206 views

assumptions for existence of envelope of a family of curves

2 votes
1 answer
368 views

dual basis and existence of non-zero functional

2 votes
1 answer
326 views

log norm inequality for lower triangular part of matrix

1 vote
1 answer
148 views

point evaluation cannot be inner product of continuous functions

1 vote
1 answer
81 views

Conjecture: Is it true that the limiting diameter of a (strictly !) nested family of compact sets must be 0 ??

1 vote
1 answer
691 views

problem on annihilators on finite dimensional spaces

1 vote
1 answer
53 views

general solution function using Method of Characteristics

1 vote
0 answers
85 views

Show that isotropic function S(A) and A have same eigenvectors

1 vote
1 answer
157 views

What is the relative interior of this set?

1 vote
1 answer
387 views

deducing matrix square root from inverse function theorem

1 vote
0 answers
83 views

Alternative derivation for Lagrange interpolation error

1 vote
1 answer
59 views

Tutte's matrix for perfect matching in bipartite graphs