Question

Matrix with integer coordinates

score 204 · Answer 1 · 2018-11-09 21:48:18

204

Views

Matrix with integer coordinates

Published on 09 Nov 2018 - 21:48

score 985 · Answer 2 · 2018-11-11 08:41:07

985

Views

Minimize the expression

Published on 11 Nov 2018 - 8:41

score 47 · Answer 3 · 2018-11-11 19:47:08

47

Views

Squares from 1 to 10000 that have a remainder of 2 when divided by 7

Published on 11 Nov 2018 - 19:47

score 52 · Answer 4 · 2026-03-25 06:06:52

52

Views

Size of largest subset $F$ of $\mathcal{p}(X)$ such that any two subsets in $F$ intersect no trivially.

Published on 25 Mar 2026 - 6:06

score 114 · Answer 5 · 2018-11-12 10:15:05

114

Views

Cancellation law on a commutative and associative binary operation on a set $S$

Published on 12 Nov 2018 - 10:15

score 1.4k · Answer 6 · 2018-11-12 10:53:56

1.4k

Views

Find all integer solutions m,n such that ${3^m}-{7^n}=2$.

Published on 12 Nov 2018 - 10:53

score 148 · Answer 7 · 2026-03-26 07:59:14

148

Views

Finding all "soccer" polyhedra (Each vertex meets three faces: two $m$-gons and one $n$-gon ($m\neq n$))

Published on 26 Mar 2026 - 7:59

score 72 · Answer 8 · 2018-11-12 17:19:56

72

Views

Beautiful real functions ($f\in C^2; C,D>0 : |x^3f(x)|\leq C$ and $|xf''(x)|\leq D$ for all $x:|x|\geq1$)

Published on 12 Nov 2018 - 17:19

score 831 · Answer 9 · 2026-03-26 09:18:04

831

Views

Prove that, the function $f$ is injective: $f \big(f(x)f(y)\big) + f(x +y) = f(xy).$

Published on 26 Mar 2026 - 9:18

score 281 · Answer 10 · 2018-11-14 09:36:01

281

Views

Contest problem without using heavy machinery in number theory

Published on 14 Nov 2018 - 9:36

score 606 · Answer 11 · 2026-03-27 14:59:07

606

Views

Set of sets such that any three of them has nonempty intersection. Show all of them have nonempty intersection.

Published on 27 Mar 2026 - 14:59

score 92 · Answer 12 · 2018-11-15 19:45:35

92

Views

Significance of assumption in competition inequality questions

Published on 15 Nov 2018 - 19:45

score 92 · Answer 13 · 2026-03-27 15:07:42

92

Views

Show that a certain set of points lies on a straight line

Published on 27 Mar 2026 - 15:07

score 427 · Answer 14 · 2026-03-25 15:22:46

427

Views

Three sides of a regular triangle is bicolored, are there three points with the same color forming a rectangular triangle?

Published on 25 Mar 2026 - 15:22

score 22 · Answer 15 · 2018-11-18 03:53:03

22

Views

Symmetric Graphing

Published on 18 Nov 2018 - 3:53

List Question

Matrix with integer coordinates

Minimize the expression

Squares from 1 to 10000 that have a remainder of 2 when divided by 7

Size of largest subset $F$ of $\mathcal{p}(X)$ such that any two subsets in $F$ intersect no trivially.

Cancellation law on a commutative and associative binary operation on a set $S$

Find all integer solutions m,n such that ${3^m}-{7^n}=2$.

Finding all "soccer" polyhedra (Each vertex meets three faces: two $m$-gons and one $n$-gon ($m\neq n$))

Beautiful real functions ($f\in C^2; C,D>0 : |x^3f(x)|\leq C$ and $|xf''(x)|\leq D$ for all $x:|x|\geq1$)

Prove that, the function $f$ is injective: $f \big(f(x)f(y)\big) + f(x +y) = f(xy).$

Contest problem without using heavy machinery in number theory

Set of sets such that any three of them has nonempty intersection. Show all of them have nonempty intersection.

Significance of assumption in competition inequality questions

Show that a certain set of points lies on a straight line

Three sides of a regular triangle is bicolored, are there three points with the same color forming a rectangular triangle?

Symmetric Graphing

Trending Questions

Popular # Hahtags

Popular Questions