Question

A question about space quotient and homeomorphism

score 37 · Answer 1 · 2026-04-12 15:54:51

37

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A question about space quotient and homeomorphism

Published on 12 Apr 2026 - 15:54

score 48 · Answer 2 · 2026-04-10 14:04:49

48

Views

linear algebra eigenvalue proof question

Published on 10 Apr 2026 - 14:04

score 150 · Answer 3 · 2026-04-16 23:11:06

150

Views

Number of points on the elliptic curve $\ y^2 = x^3 + 1$

Published on 16 Apr 2026 - 23:11

score 42 · Answer 4 · 2026-04-12 17:32:28

42

Views

Elementary Proof on Perfect Squares.

Published on 12 Apr 2026 - 17:32

score 4.2k · Answer 5 · 2026-04-17 14:38:00

4.2k

Views

Prove that, reflection of vertex of a triangle about angle bisector through other vertex lie on opposite side of triangle.

Published on 17 Apr 2026 - 14:38

score 1.7k · Answer 6 · 2026-04-11 10:07:38

1.7k

Views

The art of proof summarizing. Are there known rules, or is it a purely common sense matter?

Published on 11 Apr 2026 - 10:07

score 44 · Answer 7 · 2026-04-16 01:28:42

44

Views

Verify that a set is open

Published on 16 Apr 2026 - 1:28

score 43 · Answer 8 · 2026-04-09 07:20:59

43

Views

Help to prove this formula (Sequent calculus for predicate logic)

Published on 09 Apr 2026 - 7:20

score 72 · Answer 9 · 2026-04-12 08:39:11

72

Views

Infinite Series\Decimal Expansion Proof

Published on 12 Apr 2026 - 8:39

score 57 · Answer 10 · 2026-04-16 07:28:27

57

Views

Prove for all $f:\mathbb{N}\to\mathbb{N}$ exists $g:\mathbb{N}\to\mathbb{N}$ such that $g$ is immediate successor of $f$ in ${R}$.

Published on 16 Apr 2026 - 7:28

score 525 · Answer 11 · 2026-04-15 00:27:43

525

Views

Numerator and denominator of rational number

Published on 15 Apr 2026 - 0:27

score 261 · Answer 12 · 2026-04-14 01:40:17

261

Views

Let $\mathbb{R}^2$ be provided with component-wise multiplication $\cdot$ and component-wise addition $+$. Does $(\mathbb{R}^2,+,\cdot)$ form a field?

Published on 14 Apr 2026 - 1:40

score 64 · Answer 13 · 2026-04-11 21:26:36

64

Views

Proof Verification, family of sets

Published on 11 Apr 2026 - 21:26

score 253 · Answer 14 · 2026-04-16 02:49:36

253

Views

Is the subset $\mathbb{Q}[\sqrt2]:=\{x+\sqrt{2}y\mid x,y\in\mathbb{Q}\}$ of $\mathbb{R}$ a field?

Published on 16 Apr 2026 - 2:49

score 53 · Answer 15 · 2026-04-09 10:37:20

53

Views

Method of characteristics, understanding/setting out method

Published on 09 Apr 2026 - 10:37

List Question

A question about space quotient and homeomorphism

linear algebra eigenvalue proof question

Number of points on the elliptic curve $\ y^2 = x^3 + 1$

Elementary Proof on Perfect Squares.

Prove that, reflection of vertex of a triangle about angle bisector through other vertex lie on opposite side of triangle.

The art of proof summarizing. Are there known rules, or is it a purely common sense matter?

Verify that a set is open

Help to prove this formula (Sequent calculus for predicate logic)

Infinite Series\Decimal Expansion Proof

Prove for all $f:\mathbb{N}\to\mathbb{N}$ exists $g:\mathbb{N}\to\mathbb{N}$ such that $g$ is immediate successor of $f$ in ${R}$.

Numerator and denominator of rational number

Let $\mathbb{R}^2$ be provided with component-wise multiplication $\cdot$ and component-wise addition $+$. Does $(\mathbb{R}^2,+,\cdot)$ form a field?

Proof Verification, family of sets

Is the subset $\mathbb{Q}[\sqrt2]:=\{x+\sqrt{2}y\mid x,y\in\mathbb{Q}\}$ of $\mathbb{R}$ a field?

Method of characteristics, understanding/setting out method

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