Question

As I understand it, it is possible to define division by zero in a consistent way. The problem is that such a definition is worthless.

score 80 · Answer 1 · 2026-04-02 15:59:43

80

Views

As I understand it, it is possible to define division by zero in a consistent way. The problem is that such a definition is worthless.

Published on 02 Apr 2026 - 15:59

score 50 · Answer 2 · 2024-02-27 03:24:39

50

Views

How do I go about proving if a|b then $a^n|b^n \forall n \in \mathbb{N}$

Published on 27 Feb 2024 - 3:24

score 74 · Answer 3 · 2024-02-27 04:24:44

74

Views

Question in validity of proof that $9|n^3 + (n+1)^3 + (n+2)^3$

Published on 27 Feb 2024 - 4:24

score 71 · Answer 4 · 2024-02-27 18:29:35

71

Views

Proof by induction that $3^{2n}-1$ is divisible by 8.

Published on 27 Feb 2024 - 18:29

score 56 · Answer 5 · 2026-03-25 23:42:20

56

Views

On the "efficiency" of digit-sum divisibility tricks in other bases (or about the growth rate of the number of divisors function).

Published on 25 Mar 2026 - 23:42

score 81 · Answer 6 · 2024-02-28 12:25:05

81

Views

Computing remainder mod 3: Why/how does below procedure work?

Published on 28 Feb 2024 - 12:25

score 56 · Answer 7 · 2024-02-29 04:57:26

56

Views

How many consecutive 0 digits are at the end of $\mathrm{K}$

Published on 29 Feb 2024 - 4:57

score 76 · Answer 8 · 2024-02-29 12:40:05

76

Views

Probability that no partial sum of a permutation of $\{1,\dots,n\}$ are divisible by $3$

Published on 29 Feb 2024 - 12:40

score 24 · Answer 9 · 2026-04-02 15:58:43

24

Views

Can we find an explicit formula for $r$ and $s$ as a function of $k$

Published on 02 Apr 2026 - 15:58

score 37 · Answer 10 · 2026-03-25 23:42:11

37

Views

divisibility in polynomial ring: if $(X - a)^t | f(X)$ and $(X - b)^t | f(X)$, then does $(X - a)^t \cdot (X - b)^t \mid f(X)$?

Published on 25 Mar 2026 - 23:42

score 86 · Answer 11 · 2026-04-03 05:22:18

86

Views

Elliptic divisibility sequence $a_n$ for $y^2 = x^3 + 2$ and point $(-1,1)$ divisibility conjecture

Published on 03 Apr 2026 - 5:22

score 18 · Answer 12 · 2026-04-07 12:42:07

18

Views

What is the meaning of Division (Average Gain / Average Loss) in the RSI indicator?

Published on 07 Apr 2026 - 12:42

score 57 · Answer 13 · 2026-02-23 07:02:18

57

Views

if $\exists$ nontrivial polynomial relation $s(X) \cdot A(X) + t(X) \cdot B(X) = 0$, then do $A$ and $B$ have a common factor?

Published on 23 Feb 2026 - 7:02

score 84 · Answer 14 · 2026-04-07 23:02:05

84

Views

Abstract Algebra. Polynomial division problem

Published on 07 Apr 2026 - 23:02

score 499 · Answer 15 · 2026-04-02 11:54:46

499

Views

Is there a prime number $p$ dividing $1+2!^2+3!^2+\cdots (p-1)!^2$?

Published on 02 Apr 2026 - 11:54

List Question

As I understand it, it is possible to define division by zero in a consistent way. The problem is that such a definition is worthless.

How do I go about proving if a|b then $a^n|b^n \forall n \in \mathbb{N}$

Question in validity of proof that $9|n^3 + (n+1)^3 + (n+2)^3$

Proof by induction that $3^{2n}-1$ is divisible by 8.

On the "efficiency" of digit-sum divisibility tricks in other bases (or about the growth rate of the number of divisors function).

Computing remainder mod 3: Why/how does below procedure work?

How many consecutive 0 digits are at the end of $\mathrm{K}$

Probability that no partial sum of a permutation of $\{1,\dots,n\}$ are divisible by $3$

Can we find an explicit formula for $r$ and $s$ as a function of $k$

divisibility in polynomial ring: if $(X - a)^t | f(X)$ and $(X - b)^t | f(X)$, then does $(X - a)^t \cdot (X - b)^t \mid f(X)$?

Elliptic divisibility sequence $a_n$ for $y^2 = x^3 + 2$ and point $(-1,1)$ divisibility conjecture

What is the meaning of Division (Average Gain / Average Loss) in the RSI indicator?

if $\exists$ nontrivial polynomial relation $s(X) \cdot A(X) + t(X) \cdot B(X) = 0$, then do $A$ and $B$ have a common factor?

Abstract Algebra. Polynomial division problem

Is there a prime number $p$ dividing $1+2!^2+3!^2+\cdots (p-1)!^2$?

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