Question

Defining Addition of Natural Numbers as the Algebra of 'Push-Along' Functions

score 122 · Answer 1 · 2026-04-10 15:01:54

122

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Defining Addition of Natural Numbers as the Algebra of 'Push-Along' Functions

Published on 10 Apr 2026 - 15:01

score 1.4k · Answer 2 · 2026-05-10 16:17:37

1.4k

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Is there a connection between $\zeta(-1)$ and Ramanujan's calculation of the sum over $\mathbb{N}$?

Published on 10 May 2026 - 16:17

score 57 · Answer 3 · 2026-04-13 23:30:05

57

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What is a minimal set of rules that determine the usual order on $\Bbb{N}$ given that $1 \lt p_1 \lt p_2 \lt \dots$?

Published on 13 Apr 2026 - 23:30

score 144 · Answer 4 · 2026-05-10 21:12:35

144

Views

Build a wall with three types of bricks. What is the max length of wall less than 1000 cm you won't be able to lay?

Published on 10 May 2026 - 21:12

score 847 · Answer 5 · 2026-04-16 04:53:16

847

Views

proving that f:N^2->N is bijective

Published on 16 Apr 2026 - 4:53

score 112 · Answer 6 · 2026-04-14 14:16:03

112

Views

$\omega^\omega$ correspondence with $\mathbb R$

Published on 14 Apr 2026 - 14:16

score 417 · Answer 7 · 2026-04-11 13:09:08

417

Views

How to solve this Diophantine equation?

Published on 11 Apr 2026 - 13:09

score 847 · Answer 8 · 2026-04-09 16:01:01

847

Views

Bijection between $\{0,1\}^*$ and the natural numbers.

Published on 09 Apr 2026 - 16:01

score 88 · Answer 9 · 2026-04-17 14:35:32

88

Views

Prove that $a_n \in [0,2)$

Published on 17 Apr 2026 - 14:35

score 25 · Answer 10 · 2026-04-12 11:04:43

25

Views

Conditions for solutions to $p^a = q^b$

Published on 12 Apr 2026 - 11:04

score 276 · Answer 11 · 2026-05-11 00:24:19

276

Views

Does there exist a higher-dimensional 5-sided "tetrahedron + 1"?

Published on 11 May 2026 - 0:24

score 44 · Answer 12 · 2026-04-12 09:48:51

How to solve for the sides of a rectangle whose sides are natural numbers given its area is a known natural number?

score 143 · Answer 13 · 2026-04-16 02:19:16

143

Views

$\omega^\omega$ correspondence with $\mathbb R$-irrationality

Published on 16 Apr 2026 - 2:19

score 330 · Answer 14 · 2026-04-12 15:39:04

330

Views

Define a model for $\mathbb N$ without set theory

Published on 12 Apr 2026 - 15:39

score 833 · Answer 15 · 2026-04-12 23:11:38

833

Views

How many $10-$digit numbers are divided by $11.111$ and all the digits are different?

Published on 12 Apr 2026 - 23:11

List Question

Defining Addition of Natural Numbers as the Algebra of 'Push-Along' Functions

Is there a connection between $\zeta(-1)$ and Ramanujan's calculation of the sum over $\mathbb{N}$?

What is a minimal set of rules that determine the usual order on $\Bbb{N}$ given that $1 \lt p_1 \lt p_2 \lt \dots$?

Build a wall with three types of bricks. What is the max length of wall less than 1000 cm you won't be able to lay?

proving that f:N^2->N is bijective

$\omega^\omega$ correspondence with $\mathbb R$

How to solve this Diophantine equation?

Bijection between $\{0,1\}^*$ and the natural numbers.

Prove that $a_n \in [0,2)$

Conditions for solutions to $p^a = q^b$

Does there exist a higher-dimensional 5-sided "tetrahedron + 1"?

How to solve for the sides of a rectangle whose sides are natural numbers given its area is a known natural number?

$\omega^\omega$ correspondence with $\mathbb R$-irrationality

Define a model for $\mathbb N$ without set theory

How many $10-$digit numbers are divided by $11.111$ and all the digits are different?

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