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Azur
  • Member for 5 years
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9 votes
1 answer
654 views

Prove that a kernel operator has no eigenvalues

3 votes
1 answer
321 views

What does it mean to be a free $G$-module?

3 votes
1 answer
107 views

Coordinate-free definition of the symplectic form on the cotangent bundle

3 votes
1 answer
79 views

Examples of degenerate (Floer) Hamiltonian orbits?

3 votes
2 answers
75 views

Differentiating a pullback along a family of curves

3 votes
2 answers
103 views

Birth-death : Always more than 1 bifurcation?

2 votes
0 answers
72 views

Local form of Lagrangians

2 votes
0 answers
162 views

Transitivity of sub-manifolds

2 votes
1 answer
57 views

Making sure a list of cosets is exhaustive

2 votes
1 answer
48 views

Is Euclidean division unique in an ED

2 votes
3 answers
182 views

Why doesn't every group have order $2^n$?

2 votes
2 answers
103 views

Why is this condition required? (Schwarz's lemma)

2 votes
1 answer
60 views

How to classify the quotients of $\mathbb{Z}_p[X]$

1 vote
2 answers
301 views

(Proof-check) Alternative formula for the total variation

1 vote
1 answer
98 views

(Proofcheck) Prove that a differential equation has no general solution

1 vote
1 answer
239 views

Conditional probability and Poisson processes

1 vote
0 answers
50 views

Why are these coefficients wrong? (Upper triangularization)

1 vote
1 answer
340 views

Basis for $\Lambda^k V^*$ the $k$-th exterior power of the dual

1 vote
2 answers
135 views

Direct sum decomposition of a quotient of vector spaces

1 vote
0 answers
113 views

Product, coproduct, and convolution of chain complexes

1 vote
1 answer
82 views

Why is this shape an annulus?

1 vote
1 answer
51 views

Hamiltonian isotopy of the zero section is $\text{Graph}(df)$?

1 vote
0 answers
32 views

$f$ smooth non-analytic, $f(0) = 0$. Is $f(x)/x$ smooth at $0$? [duplicate]

1 vote
0 answers
78 views

Step in proof on the support of a module in equivariant cohomology

1 vote
0 answers
145 views

Why is this not a logarithmic branch point?

0 votes
0 answers
66 views

Kernel of a (not so) simple $\mathbb{Z}[\mathbb{Z}/n]$ map

0 votes
1 answer
139 views

Relation between free action and free modules

0 votes
1 answer
50 views

Step in building up spectral sequences

0 votes
1 answer
204 views

Zero derivative for a map between connected manifolds (Unnecessary hypothesis?)

0 votes
2 answers
414 views

Finding the flow lines of a given vector field on $S^2$