Question

Dimension of intersection of kernels of linear functionals

score 132 · Answer 1 · 2026-04-15 18:25:44

132

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Dimension of intersection of kernels of linear functionals

Published on 15 Apr 2026 - 18:25

score 671 · Answer 2 · 2026-04-13 20:34:23

671

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Show that graph with $n$ vertices is a tree if it has has no cycle and has $n-1$ edges

Published on 13 Apr 2026 - 20:34

score 87 · Answer 3 · 2026-04-14 10:54:28

87

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Trying to prove this relationship. Not sure if this is correct.

Published on 14 Apr 2026 - 10:54

score 46 · Answer 4 · 2026-03-25 17:20:10

46

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Ways of showing that the LU decomposition of a square matrix almost always exists?

Published on 25 Mar 2026 - 17:20

score 36 · Answer 5 · 2026-04-12 03:01:02

36

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Probability of making a bus connection

Published on 12 Apr 2026 - 3:01

score 77 · Answer 6 · 2026-04-11 02:34:59

77

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If $T^rv=v$ and $v,Tv,\ldots,T^{r-1}v$ are linearly independent, every $r$th root of unity is an eigenvalue

Published on 11 Apr 2026 - 2:34

score 44 · Answer 7 · 2026-04-08 19:43:14

44

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Trebuchet Projectile Kinetic Energy

Published on 08 Apr 2026 - 19:43

score 616 · Answer 8 · 2026-04-09 08:15:21

616

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What are some slick proofs of basic algebraic facts?

Published on 09 Apr 2026 - 8:15

score 107 · Answer 9 · 2026-04-16 13:13:40

107

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Prove that for all $n\in \mathbb{N}$ we have that $6$ divides $n^3-n$

Published on 16 Apr 2026 - 13:13

score 93 · Answer 10 · 2026-04-16 03:32:05

93

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If real $f$ is such that $\exists\delta>0:\ \forall\varepsilon>0,\vert x-y\vert<\delta\implies\vert f(x)-f(y)\vert<\varepsilon.$ Then $f$ is constant.

Published on 16 Apr 2026 - 3:32

score 62 · Answer 11 · 2026-04-12 22:33:43

62

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Can we define the Lebesgue measure $\mu:\mathcal{L}(\mathbb{R})\to[0,\infty]$ using Carathéodory's Extension Theorem?

Published on 12 Apr 2026 - 22:33

score 46 · Answer 12 · 2026-04-14 19:04:15

46

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Classifying the following set in the arithmetical hierarchy?

Published on 14 Apr 2026 - 19:04

score 136 · Answer 13 · 2026-04-14 15:13:10

136

Views

Alternative proof that maximal abelian normal subgroups of a nilpotent group are self-centralizing

Published on 14 Apr 2026 - 15:13

score 159 · Answer 14 · 2026-04-10 16:31:50

159

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Lemma 3, Section 6.2 of Hoffman’s Linear Algebra

Published on 10 Apr 2026 - 16:31

score 86 · Answer 15 · 2026-04-17 09:17:23

86

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How to prove (∀a, b, c ∈ N) a < b ⇒ a < bc. using only the basic axioms of natural numbers

Published on 17 Apr 2026 - 9:17

List Question

Dimension of intersection of kernels of linear functionals

Show that graph with $n$ vertices is a tree if it has has no cycle and has $n-1$ edges

Trying to prove this relationship. Not sure if this is correct.

Ways of showing that the LU decomposition of a square matrix almost always exists?

Probability of making a bus connection

If $T^rv=v$ and $v,Tv,\ldots,T^{r-1}v$ are linearly independent, every $r$th root of unity is an eigenvalue

Trebuchet Projectile Kinetic Energy

What are some slick proofs of basic algebraic facts?

Prove that for all $n\in \mathbb{N}$ we have that $6$ divides $n^3-n$

If real $f$ is such that $\exists\delta>0:\ \forall\varepsilon>0,\vert x-y\vert<\delta\implies\vert f(x)-f(y)\vert<\varepsilon.$ Then $f$ is constant.

Can we define the Lebesgue measure $\mu:\mathcal{L}(\mathbb{R})\to[0,\infty]$ using Carathéodory's Extension Theorem?

Classifying the following set in the arithmetical hierarchy?

Alternative proof that maximal abelian normal subgroups of a nilpotent group are self-centralizing

Lemma 3, Section 6.2 of Hoffman’s Linear Algebra

How to prove (∀a, b, c ∈ N) a < b ⇒ a < bc. using only the basic axioms of natural numbers

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