Question

Understanding proof that symmetric matrix is diagonalizable

score 413 · Answer 1 · 2026-04-06 04:16:30

413

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Understanding proof that symmetric matrix is diagonalizable

Published on 06 Apr 2026 - 4:16

score 260 · Answer 2 · 2026-03-28 06:01:32

260

Views

A question regarding the Bolzano Weierstrass Theorem

Published on 28 Mar 2026 - 6:01

score 2.3k · Answer 3 · 2019-05-03 23:39:32

2.3k

Views

If all diagonals are drawn in a regular polygon from a vertex, the angles formed in that vertex are equal

Published on 03 May 2019 - 23:39

score 100 · Answer 4 · 2026-03-28 05:59:58

100

Views

Sketches of proofs written in English that show that first-order logic is complete?

Published on 28 Mar 2026 - 5:59

score 127 · Answer 5 · 2026-04-04 20:57:12

127

Views

prove that an equation is bounded by 1

Published on 04 Apr 2026 - 20:57

score 133 · Answer 6 · 2019-05-04 21:28:34

133

Views

Showing for a group $G$ with $a,b,x \in G$ that $ax=bx \implies a=b$

Published on 04 May 2019 - 21:28

score 661 · Answer 7 · 2026-03-26 23:10:43

661

Views

Why is there a one-to-one correspondence between homomorphic images of a group $G$ and normal subgroups of $G$?

Published on 26 Mar 2026 - 23:10

score 184 · Answer 8 · 2026-04-01 06:08:13

184

Views

Notation for the product of $n$ rational numbers (proof by induction)

Published on 01 Apr 2026 - 6:08

score 38 · Answer 9 · 2019-05-06 06:51:41

38

Views

A congruency proof question using circles

Published on 06 May 2019 - 6:51

score 456 · Answer 10 · 2026-03-30 20:08:57

456

Views

Intuition behind lines and points in the projective plane

Published on 30 Mar 2026 - 20:08

score 48 · Answer 11 · 2019-05-06 13:21:24

48

Views

Prove a set of vectors $A_i$ perpendicular in pairs is linearly independent

Published on 06 May 2019 - 13:21

score 57 · Answer 12 · 2019-05-06 13:31:34

57

Views

Computing $I=\int_0 ^{2\pi}\frac{dx}{(a+b\cos x)^2}$

Published on 06 May 2019 - 13:31

score 31 · Answer 13 · 2026-04-01 06:10:03

31

Views

Base case for $\sum_{j=1}^{n-1}{j^k}<\frac{n^{k+1}}{k+1}$ with $k\in \mathbb{N}$ and $n\geq 2$

Published on 01 Apr 2026 - 6:10

score 45 · Answer 14 · 2026-04-03 08:16:57

45

Views

If we could just use '<' instead of '≤', why are we still using '≤' in many statements?

Published on 03 Apr 2026 - 8:16

score 99 · Answer 15 · 2026-03-28 02:59:41

99

Views

Indefinite integral through factorization

Published on 28 Mar 2026 - 2:59

List Question

Understanding proof that symmetric matrix is diagonalizable

A question regarding the Bolzano Weierstrass Theorem

If all diagonals are drawn in a regular polygon from a vertex, the angles formed in that vertex are equal

Sketches of proofs written in English that show that first-order logic is complete?

prove that an equation is bounded by 1

Showing for a group $G$ with $a,b,x \in G$ that $ax=bx \implies a=b$

Why is there a one-to-one correspondence between homomorphic images of a group $G$ and normal subgroups of $G$?

Notation for the product of $n$ rational numbers (proof by induction)

A congruency proof question using circles

Intuition behind lines and points in the projective plane

Prove a set of vectors $A_i$ perpendicular in pairs is linearly independent

Computing $I=\int_0 ^{2\pi}\frac{dx}{(a+b\cos x)^2}$

Base case for $\sum_{j=1}^{n-1}{j^k}<\frac{n^{k+1}}{k+1}$ with $k\in \mathbb{N}$ and $n\geq 2$

If we could just use '<' instead of '≤', why are we still using '≤' in many statements?

Indefinite integral through factorization

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