Question

Does there exist a subset of N satisfying a certain density property

score 122 · Answer 1 · 2026-03-31 10:49:25

122

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Does there exist a subset of N satisfying a certain density property

Published on 31 Mar 2026 - 10:49

score 43 · Answer 2 · 2022-02-08 01:59:55

43

Views

Probability of second random number is larger than the first one?

Published on 08 Feb 2022 - 1:59

score 76 · Answer 3 · 2022-02-25 08:26:32

76

Views

Question about inductive definition of natural number

Published on 25 Feb 2022 - 8:26

score 22 · Answer 4 · 2022-02-26 15:55:39

22

Views

How to solve this problem on alligations?

Published on 26 Feb 2022 - 15:55

score 73 · Answer 5 · 2026-03-29 22:38:50

73

Views

Question regarding natural numbers in Tao’s Analysis 1.

Published on 29 Mar 2026 - 22:38

score 33 · Answer 6 · 2022-03-01 08:34:52

33

Views

How many elements of the inverse of an $n\times n$ matrix of natural numbers can be the same as itself?

Published on 01 Mar 2022 - 8:34

score 143 · Answer 7 · 2022-03-03 11:41:27

143

Views

What is the sum of natural numbers that have $5$ digits or less, and all of the digits are distinct?

Published on 03 Mar 2022 - 11:41

score 57 · Answer 8 · 2022-03-04 02:24:00

57

Views

How do I define the proper subset $\bigcup\limits_{i=1}^\infty[n^2,n^2+1]$ of a set $\bigcup\limits_{i=1}^\infty[n,n+1]$

Published on 04 Mar 2022 - 2:24

score 51 · Answer 9 · 2026-03-29 22:40:39

51

Views

Does the side of the successor function in the second postulate of the definition of addition matter?

Published on 29 Mar 2026 - 22:40

score 44 · Answer 10 · 2022-03-08 12:14:43

44

Views

Addition and Multiplication Independent of Permutations

Published on 08 Mar 2022 - 12:14

score 68 · Answer 11 · 2022-03-10 11:25:41

68

Views

Induction axiom and its logical properties

Published on 10 Mar 2022 - 11:25

score 82 · Answer 12 · 2022-03-14 23:18:49

82

Views

Question about the product of some consecutive integers being factorials.

Published on 14 Mar 2022 - 23:18

score 48 · Answer 13 · 2022-03-15 19:54:54

48

Views

Order preserving map from interval $(0,1)$ to the ultrafilter

Published on 15 Mar 2022 - 19:54

score 65 · Answer 14 · 2022-03-17 01:44:01

65

Views

The $a+nd$ topology for $\mathbb{N}$

Published on 17 Mar 2022 - 1:44

score 349 · Answer 15 · 2022-03-17 22:24:53

349

Views

Why does my topology textbook (Munkres) define positive integers as the intersection of all inductive subsets of the reals?

Published on 17 Mar 2022 - 22:24

List Question

Does there exist a subset of N satisfying a certain density property

Probability of second random number is larger than the first one?

Question about inductive definition of natural number

How to solve this problem on alligations?

Question regarding natural numbers in Tao’s Analysis 1.

How many elements of the inverse of an $n\times n$ matrix of natural numbers can be the same as itself?

What is the sum of natural numbers that have $5$ digits or less, and all of the digits are distinct?

How do I define the proper subset $\bigcup\limits_{i=1}^\infty[n^2,n^2+1]$ of a set $\bigcup\limits_{i=1}^\infty[n,n+1]$

Does the side of the successor function in the second postulate of the definition of addition matter?

Addition and Multiplication Independent of Permutations

Induction axiom and its logical properties

Question about the product of some consecutive integers being factorials.

Order preserving map from interval $(0,1)$ to the ultrafilter

The $a+nd$ topology for $\mathbb{N}$

Why does my topology textbook (Munkres) define positive integers as the intersection of all inductive subsets of the reals?

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