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Vasting
  • Member for 8 years, 7 months
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7 votes
2 answers
491 views

Does a function that satisfies the equality $f(a+b) = f(a)f(b)$ have to be exponential? [duplicate]

6 votes
3 answers
303 views

How to prove $\mathbb Z_3\rtimes(\mathbb Z_2\mathbb \times\mathbb Z_2) \cong S_3\times\mathbb Z_2$?

5 votes
1 answer
566 views

When does the limit $\lim_{(x,y)\to(0,0)} \frac{x^ky^l}{x^{2p}+y^{2q}}$ exist?

5 votes
1 answer
386 views

Can a power series uniformly converge on open disc?

5 votes
1 answer
345 views

What really is $dr$ in differential forms?

5 votes
1 answer
618 views

Direct sum of complexes in chain complex

4 votes
1 answer
129 views

Question about differential forms spherical

4 votes
1 answer
585 views

First Fundamental Form and the Metric

4 votes
1 answer
678 views

Orientation and integration of differential forms

4 votes
1 answer
202 views

Does Product Topology Distribute Over Disjoint Union?

4 votes
1 answer
188 views

Proof of inequality about $\cot \pi z$.

4 votes
1 answer
301 views

Homomorphisms with the same kernel has the same semidirect product?

3 votes
1 answer
294 views

Question about proof in Neukirch

3 votes
1 answer
457 views

Determinant of $2\times 2$ block matrices [duplicate]

3 votes
1 answer
200 views

Two different definitions of limits.

3 votes
1 answer
99 views

Finite covers of $X$ and continuous profinite group actions

3 votes
2 answers
215 views

Linear Algebra Question about Root Systems

2 votes
1 answer
144 views

Affine map vs. affine transformation

2 votes
1 answer
665 views

Cohomology of Real Projective Space

2 votes
1 answer
143 views

Obtaining $B$-module from $A$-module via surjective ring homomorphism

2 votes
0 answers
100 views

Confusion about non-pure tensors.

2 votes
1 answer
208 views

What is going on in this proof of the Cayley-Hamilton theorem?

2 votes
0 answers
46 views

Why does $(p)$ split in $\mathbb{Z}[i]$ if and only if $X^2+1$ split modulo $p$?

2 votes
1 answer
554 views

Proof that degree $n$ polynomial has at most $n$ roots (counting multiplicity)

2 votes
1 answer
39 views

Question about closure.

2 votes
1 answer
92 views

Hatcher Question Long Exact Homology

2 votes
1 answer
311 views

Counterexample to naive excision theorem

2 votes
1 answer
125 views

Addition and scalar multiplication in vector space

2 votes
0 answers
55 views

Question about showing $L^1$ is complete.

2 votes
2 answers
47 views

Question about structure of ideals of a sub-ideal