List questions from alternative-proof

Published on 03 Jul 2018 - 20:53

50

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$\frac{u_n}{1+u^2_n} \longrightarrow \frac{u}{1+u^2}\quad \text{ strongly in }L^1(\mathbb R).$

Published on 05 Jul 2018 - 0:17

295

Views

Power of a point parabola theorem

Published on 23 Feb 2026 - 4:39

2.1k

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Graph $G$ with different weights on edges has unique minimum spanning tree

Published on 25 Mar 2026 - 21:45

325

Views

prove: if a real number $a=\lim_{n\to \infty} a_n > c > 0$, then eventually $a_n > c$

Published on 25 Mar 2026 - 1:37

496

Views

Nested summation - intuition

Published on 07 Jul 2018 - 20:34

927

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Proof verification - Cauchy completeness of $\mathbb{R}$

Published on 25 Mar 2026 - 13:52

300

Views

Proof that If Two Homogeneous System in two unknowns has the same solutions, they are equivalent

Published on 10 Jul 2018 - 10:02

103

Views

Unnecessary proofs?

Published on 12 Jul 2018 - 7:26

168

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Prove the following statements: Linear algebra (Vector spaces)

Published on 16 Jul 2018 - 9:49

403

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Adapting a picture proof of trig's Angle Addition identities to angles greater than $90^\circ$

Published on 17 Jul 2018 - 10:44

77

Views

Prove that $\sum_{j=1}^{n} \mathbb{P}(I_j) \geq \mathbb{P}(I)$, when $\bigcup_{j=1}^n I_j \supseteq I$.

Published on 17 Jul 2018 - 12:07

57

Views

Attempt to proof following statement (kernel and image of a matrix)

Published on 18 Jul 2018 - 11:01

58

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Proof verification of Simplicial homology of $M_g$

Published on 18 Jul 2018 - 11:15

511

Views

If $V,W$ are finite-dimensional and $T: V \to W$ , $S: W \to V$ are injective linear maps then $T$ is an isomorphism

Published on 20 Jul 2018 - 0:27

List Question

Techniques to prove that solutions of ODE are defined for all time.

$\frac{u_n}{1+u^2_n} \longrightarrow \frac{u}{1+u^2}\quad \text{ strongly in }L^1(\mathbb R).$

Power of a point parabola theorem

Graph $G$ with different weights on edges has unique minimum spanning tree

prove: if a real number $a=\lim_{n\to \infty} a_n > c > 0$, then eventually $a_n > c$

Nested summation - intuition

Proof verification - Cauchy completeness of $\mathbb{R}$

Proof that If Two Homogeneous System in two unknowns has the same solutions, they are equivalent

Unnecessary proofs?

Prove the following statements: Linear algebra (Vector spaces)

Adapting a picture proof of trig's Angle Addition identities to angles greater than $90^\circ$

Prove that $\sum_{j=1}^{n} \mathbb{P}(I_j) \geq \mathbb{P}(I)$, when $\bigcup_{j=1}^n I_j \supseteq I$.

Attempt to proof following statement (kernel and image of a matrix)

Proof verification of Simplicial homology of $M_g$

If $V,W$ are finite-dimensional and $T: V \to W$ , $S: W \to V$ are injective linear maps then $T$ is an isomorphism

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