List questions from proof-explanation

Published on 25 Mar 2026 - 12:33

100

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Theorem 1.34 Rudin's functional analysis (e)

Published on 09 Apr 2026 - 11:03

54

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Flawed reasoning in proving $A\subseteq B$ iff $A-B=\emptyset$

Published on 13 Apr 2026 - 19:22

36

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Showing that if $d=\gcd(n,m)$ then the integers $\frac{n}{d}$ and $\frac{m}{d}$ are coprime

Published on 09 Apr 2026 - 11:46

404

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How to use the homology version of Whitehead theorem to prove this question?

Published on 11 Apr 2026 - 23:58

71

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Showing that a map is a homotopy equivalence.Is the solution of this problem correct?

Published on 16 Apr 2026 - 19:04

104

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Prove $2^x≥x^2$

Published on 15 Apr 2026 - 18:53

76

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Why is $\Lambda:=\text{Orb}(q)\cup\{p\}$ a hyperbolic set? [see added link in post]

Published on 25 Mar 2026 - 22:23

1.2k

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Prove that $\bigcap\limits_{x\in\Bbb R}[3-x^2, 5+x^2]=[3,5]$. Where have I gone wrong?

Published on 15 Apr 2026 - 11:37

295

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Why is the map $(p,t) \mapsto \gamma_p(t)$, from the flow of the gradient, an immersion?

Published on 16 Apr 2026 - 9:26

75

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Meaning of $\wedge$ in this equation

Published on 09 Apr 2026 - 10:37

72

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Show that $E_1$ is algebraic over $K.$

Published on 14 Apr 2026 - 4:08

57

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$\liminf \left( \int_E \phi - \int_E f_k \right) = \int_E \phi - \limsup \int_E f_k$

Published on 15 Apr 2026 - 19:20

105

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How to draw the trajectories of the solutions in the canonical basis?

Published on 15 Apr 2026 - 13:10

330

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Expressing gcd as a linear combination of two polynomials

Published on 10 Apr 2026 - 18:17

List Question

Show that a path $\beta: I \rightarrow B $ lifts to a path $\bar{\beta}: I \rightarrow E .$

Theorem 1.34 Rudin's functional analysis (e)

Flawed reasoning in proving $A\subseteq B$ iff $A-B=\emptyset$

Showing that if $d=\gcd(n,m)$ then the integers $\frac{n}{d}$ and $\frac{m}{d}$ are coprime

How to use the homology version of Whitehead theorem to prove this question?

Showing that a map is a homotopy equivalence.Is the solution of this problem correct?

Prove $2^x≥x^2$

Why is $\Lambda:=\text{Orb}(q)\cup\{p\}$ a hyperbolic set? [see added link in post]

Prove that $\bigcap\limits_{x\in\Bbb R}[3-x^2, 5+x^2]=[3,5]$. Where have I gone wrong?

Why is the map $(p,t) \mapsto \gamma_p(t)$, from the flow of the gradient, an immersion?

Meaning of $\wedge$ in this equation

Show that $E_1$ is algebraic over $K.$

$\liminf \left( \int_E \phi - \int_E f_k \right) = \int_E \phi - \limsup \int_E f_k$

How to draw the trajectories of the solutions in the canonical basis?

Expressing gcd as a linear combination of two polynomials

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