List questions from proof-explanation

Published on 10 Dec 2018 - 18:07

88

Views

How does this example from Spivak that $H_c^n(\mathbb R^n) \ne 0$?

Published on 26 Mar 2026 - 2:54

90

Views

Question regarding the factor group lemma for Cayley graphs

Published on 02 Apr 2026 - 22:21

154

Views

Heine theorem without subsequences

Published on 11 Dec 2018 - 14:55

2k

Views

Prove that the set of continuous real-valued functions on $[0,1]$ is a subspace of $\mathbb{R}^{[0,1]}$

Published on 26 Mar 2026 - 11:18

61

Views

Proof of Invariance of Domain in Introduction to Algebraic Topology by Rotman

Published on 12 Dec 2018 - 4:37

590

Views

question on proving the compositions o functions is associative

Published on 12 Dec 2018 - 8:52

616

Views

Prove that union of countable sets is countable

Published on 12 Dec 2018 - 18:55

37

Views

Suppose $G$ has a lower central series and $H$ is a proper subgroup of $G$. Show an index $k$ such that $G^{k+1} \subset H$ but $G^k \not\subset H$.

Published on 12 Dec 2018 - 22:49

155

Views

What conditions do we need on $A$ in order for the inverse of $AA^\top$ to exist?

Published on 12 Dec 2018 - 23:46

217

Views

Help on the derivation of Abel's Theorem using the wronskian

Published on 28 Mar 2026 - 20:58

1.6k

Views

Proof: A tangent space of the manifold of SPD matrices is the set of symmetric matrices

Published on 25 Mar 2026 - 19:07

60

Views

Struggling to understand step in proof regarding a sequence of measurable functions

Published on 13 Dec 2018 - 20:07

510

Views

Proof explanation that the square root of 2 exists

Published on 28 Mar 2026 - 20:58

26

Views

Using the M.V.T. to prove certain properties of a function

Published on 14 Dec 2018 - 3:53

List Question

A corrispondence between maximal ideals

How does this example from Spivak that $H_c^n(\mathbb R^n) \ne 0$?

Question regarding the factor group lemma for Cayley graphs

Heine theorem without subsequences

Prove that the set of continuous real-valued functions on $[0,1]$ is a subspace of $\mathbb{R}^{[0,1]}$

Proof of Invariance of Domain in Introduction to Algebraic Topology by Rotman

question on proving the compositions o functions is associative

Prove that union of countable sets is countable

Suppose $G$ has a lower central series and $H$ is a proper subgroup of $G$. Show an index $k$ such that $G^{k+1} \subset H$ but $G^k \not\subset H$.

What conditions do we need on $A$ in order for the inverse of $AA^\top$ to exist?

Help on the derivation of Abel's Theorem using the wronskian

Proof: A tangent space of the manifold of SPD matrices is the set of symmetric matrices

Struggling to understand step in proof regarding a sequence of measurable functions

Proof explanation that the square root of 2 exists

Using the M.V.T. to prove certain properties of a function

Trending Questions

Popular # Hahtags

Popular Questions