Question

Some maths journals for tough Olympiad and real analysis problems?

score 68 · Answer 1 · 2026-04-11 11:01:02

68

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Some maths journals for tough Olympiad and real analysis problems?

Published on 11 Apr 2026 - 11:01

score 120 · Answer 2 · 2026-03-26 04:34:59

120

Views

A beetle on each square of a $9 \times 9$ chessboard. Each beetle crawls one square diagonally, find minimal possible no. of free squares.

Published on 26 Mar 2026 - 4:34

score 164 · Answer 3 · 2026-04-10 18:39:26

164

Views

Modified hat problem seems hard

Published on 10 Apr 2026 - 18:39

score 213 · Answer 4 · 2026-04-10 02:18:04

213

Views

Trying to find an identity for $\arctan(ab)$ in terms of any other trigonometric function

Published on 10 Apr 2026 - 2:18

score 38 · Answer 5 · 2026-04-08 07:33:15

38

Views

Math formula for finding 'HH:MM:SS:MMM' Timecode given a number of frames and FPS?

Published on 08 Apr 2026 - 7:33

score 48 · Answer 6 · 2026-04-12 07:29:46

48

Views

How do I plot $W(z^2)W(1/z)$ where $W(z)$ is the product log function and $z=x+yi$ in Desmos 3D?

Published on 12 Apr 2026 - 7:29

score 64 · Answer 7 · 2026-04-10 22:13:10

64

Views

Changing sign of number when transposing

Published on 10 Apr 2026 - 22:13

score 69 · Answer 8 · 2026-04-12 05:14:49

69

Views

Does the sequence of groups taken from successively finding the automorphism group always eventually become constant, for finite groups?

Published on 12 Apr 2026 - 5:14

score 2.8k · Answer 9 · 2026-04-07 16:11:23

2.8k

Views

Conjectures for finite groups that fail with large counterexamples

Published on 07 Apr 2026 - 16:11

score 59 · Answer 10 · 2026-04-09 14:56:29

59

Views

How to solve this interesting optimization problem?

Published on 09 Apr 2026 - 14:56

score 151 · Answer 11 · 2026-04-10 20:26:17

151

Views

Is there a formula to find any $x^i=1+0i$ where $i=\sqrt{-1}$?

Published on 10 Apr 2026 - 20:26

score 153 · Answer 12 · 2026-04-11 23:14:13

153

Views

Factoring a year to get a date

Published on 11 Apr 2026 - 23:14

score 61 · Answer 13 · 2024-01-08 15:08:30

61

Views

Is there an easy way to calculate the subfactorial of a number?

Published on 08 Jan 2024 - 15:08

score 142 · Answer 14 · 2026-03-31 09:28:21

142

Views

What are the next primes/semiprimes of the form $\frac{(n-1)^n+1}{n^2}$?

Published on 31 Mar 2026 - 9:28

score 201 · Answer 15 · 2026-03-26 01:08:04

201

Views

Is there a way to label points in 3D Desmos?

Published on 26 Mar 2026 - 1:08

List Question

Some maths journals for tough Olympiad and real analysis problems?

A beetle on each square of a $9 \times 9$ chessboard. Each beetle crawls one square diagonally, find minimal possible no. of free squares.

Modified hat problem seems hard

Trying to find an identity for $\arctan(ab)$ in terms of any other trigonometric function

Math formula for finding 'HH:MM:SS:MMM' Timecode given a number of frames and FPS?

How do I plot $W(z^2)W(1/z)$ where $W(z)$ is the product log function and $z=x+yi$ in Desmos 3D?

Changing sign of number when transposing

Does the sequence of groups taken from successively finding the automorphism group always eventually become constant, for finite groups?

Conjectures for finite groups that fail with large counterexamples

How to solve this interesting optimization problem?

Is there a formula to find any $x^i=1+0i$ where $i=\sqrt{-1}$?

Factoring a year to get a date

Is there an easy way to calculate the subfactorial of a number?

What are the next primes/semiprimes of the form $\frac{(n-1)^n+1}{n^2}$?

Is there a way to label points in 3D Desmos?

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