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Kaa1el
  • Member for 10 years, 9 months
  • Last seen more than a month ago
18 votes
3 answers
7k views

If a group $G$ has odd order, then the square function is injective.

7 votes
1 answer
2k views

Equal winding number implies two paths are path homotopic?

7 votes
1 answer
266 views

Is this particular module flat?

5 votes
2 answers
5k views

Quotient space of S1 is homeomorphic to S1

5 votes
3 answers
3k views

Compact but not Hausdorff space

5 votes
1 answer
868 views

Property of a specific set with Lebesgue measure zero

4 votes
1 answer
216 views

Finitely many countable models implies decidability

4 votes
1 answer
285 views

Equivalence of $\int_a^b|f|=0$

4 votes
1 answer
154 views

Does König's inequality require axiom of choice?

4 votes
1 answer
1k views

A property of minimal prime ideal

3 votes
0 answers
1k views

The homology group for $\mathbb{R}^n$ minus two points

3 votes
2 answers
91 views

$4qx^3-3qx-p$ is not reducible over $\mathbb{Q}$

3 votes
2 answers
97 views

Relation between integration and measure

2 votes
1 answer
847 views

A version of reverse Fatou's Lemma

2 votes
0 answers
641 views

Problem in solving quartic equations

2 votes
0 answers
46 views

$H_1(A\cap B)\to H_1B$ is 1-1 implies $H_1A\to H_1(A\cup B)$ is 1-1

2 votes
1 answer
650 views

Continuity of measure under translation in $\mathbb{R}^n$

2 votes
0 answers
214 views

Necessary and sufficient condition for a ring homomorphisms property

2 votes
1 answer
154 views

Use convergence theorem to prove the limit

2 votes
1 answer
702 views

All local subrings of $\mathbb Q$ are valuation rings of $\mathbb Q$?

2 votes
0 answers
63 views

proposition 6.22 in Awodey's category theory textbook

1 vote
0 answers
240 views

Quantifier free formula equivalents

1 vote
1 answer
64 views

Finite order elements commutes with group

1 vote
1 answer
1k views

Computing homology group of product of spheres

1 vote
1 answer
166 views

Proving this series is convergent almost everywhere

1 vote
2 answers
182 views

Relation between closed 1-chain and closed paths

0 votes
1 answer
80 views

Equivalence of zero divisor in commutative ring

0 votes
1 answer
123 views

An exercise in measure theory

0 votes
1 answer
144 views

An inequality about entropy

0 votes
1 answer
19 views

Is this true for any $L^p$ space?