Question

Stack the digits of number

score 41 · Answer 1 · 2026-03-27 22:30:33

41

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Stack the digits of number

Published on 27 Mar 2026 - 22:30

score 63 · Answer 2 · 2026-03-30 02:08:54

63

Views

Assuming the following definition of the addition of natural numbers, how do I prove that $\forall a:0+a=a$

Published on 30 Mar 2026 - 2:08

score 141 · Answer 3 · 2026-03-27 03:56:00

141

Views

Symmetric pairing functions?

Published on 27 Mar 2026 - 3:56

score 81 · Answer 4 · 2022-07-02 19:05:22

Is there a way to prove that the addition of two natural numbers always gives the same value, i.e. $\forall a\forall b\exists!c(a+b=c)$?

score 366 · Answer 5 · 2026-03-30 02:07:13

366

Views

How do I prove that the addition of natural numbers, as defined by Peano, is unique?

Published on 30 Mar 2026 - 2:07

score 124 · Answer 6 · 2022-07-11 10:54:14

124

Views

Number of solutions to $a\cdot b=c$

Published on 11 Jul 2022 - 10:54

score 95 · Answer 7 · 2022-07-15 20:14:01

95

Views

injective sequence of natural numbers has infinite plus limit

Published on 15 Jul 2022 - 20:14

score 114 · Answer 8 · 2022-07-16 12:25:01

114

Views

Is every subset of the natural numbers that is closed under successor also closed under addition?

Published on 16 Jul 2022 - 12:25

score 56 · Answer 9 · 2026-03-30 03:54:53

56

Views

Building product in $\Bbb N$ using the function $s: n\mapsto n+1$

Published on 30 Mar 2026 - 3:54

score 40 · Answer 10 · 2022-07-22 14:50:15

40

Views

Show that $\{\emptyset, \mathbb N\}\cup\{O_n: n\in \mathbb N\}$ forms a topology where $O_n = \{n,n+1,n+2,\dots\}$

Published on 22 Jul 2022 - 14:50

score 120 · Answer 11 · 2022-07-27 20:12:40

120

Views

Given the prime factors of two natural numbers, is it possible to decide which of the numbers is greater?

Published on 27 Jul 2022 - 20:12

score 54 · Answer 12 · 2022-08-13 05:54:12

54

Views

given these Axiom, do we have multiple different set of natural number?

Published on 13 Aug 2022 - 5:54

score 209 · Answer 13 · 2022-08-27 12:39:23

209

Views

Do we draw a distinction between a number as an element of the reals, and an element of the naturals?

Published on 27 Aug 2022 - 12:39

score 63 · Answer 14 · 2022-08-30 15:48:36

63

Views

Homeomorphism of $\Bbb R$ sending $\Bbb N$ to $\Bbb Q$

Published on 30 Aug 2022 - 15:48

score 249 · Answer 15 · 2022-09-01 07:54:59

249

Views

"How" absolute are natural numbers?

Published on 01 Sep 2022 - 7:54

List Question

Stack the digits of number

Assuming the following definition of the addition of natural numbers, how do I prove that $\forall a:0+a=a$

Symmetric pairing functions?

Is there a way to prove that the addition of two natural numbers always gives the same value, i.e. $\forall a\forall b\exists!c(a+b=c)$?

How do I prove that the addition of natural numbers, as defined by Peano, is unique?

Number of solutions to $a\cdot b=c$

injective sequence of natural numbers has infinite plus limit

Is every subset of the natural numbers that is closed under successor also closed under addition?

Building product in $\Bbb N$ using the function $s: n\mapsto n+1$

Show that $\{\emptyset, \mathbb N\}\cup\{O_n: n\in \mathbb N\}$ forms a topology where $O_n = \{n,n+1,n+2,\dots\}$

Given the prime factors of two natural numbers, is it possible to decide which of the numbers is greater?

given these Axiom, do we have multiple different set of natural number?

Do we draw a distinction between a number as an element of the reals, and an element of the naturals?

Homeomorphism of $\Bbb R$ sending $\Bbb N$ to $\Bbb Q$

"How" absolute are natural numbers?

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