Question

Given integers $a_0, a_1, ... a_n$, count how many $a_i$, $a_j$ whose binary representations logically ANDed equal zero

score 77 · Answer 1 · 2020-08-03 16:29:27

77

Views

Given integers $a_0, a_1, ... a_n$, count how many $a_i$, $a_j$ whose binary representations logically ANDed equal zero

Published on 03 Aug 2020 - 16:29

score 955 · Answer 2 · 2026-03-26 01:28:19

955

Views

To prove that an operation is well-defined in modular arithmetic

Published on 26 Mar 2026 - 1:28

score 261 · Answer 3 · 2026-03-26 14:20:50

261

Views

Are there "tri-commutative" structures for which: $AB \neq BA$, $BC \neq CB$, yet $ABC = BAC = ACB$?

Published on 26 Mar 2026 - 14:20

score 53 · Answer 4 · 2020-08-12 15:49:42

53

Views

Can this binary-expression be simplified?

Published on 12 Aug 2020 - 15:49

score 61 · Answer 5 · 2020-08-12 16:57:21

61

Views

How to show that composition is not in general commutative on $\text{Funct}(X, X)$?

Published on 12 Aug 2020 - 16:57

score 82 · Answer 6 · 2020-08-12 19:21:13

82

Views

Prove that an anticommutative operation on $\lvert X \rvert > 1$ is not commutative and has no identity element

Published on 12 Aug 2020 - 19:21

score 131 · Answer 7 · 2026-03-28 18:14:08

131

Views

Exactly one right inverse implies invertible?

Published on 28 Mar 2026 - 18:14

score 60 · Answer 8 · 2026-02-23 11:15:50

60

Views

Commutative monoid structures on $\Bbb{N}$

Published on 23 Feb 2026 - 11:15

score 67 · Answer 9 · 2026-03-27 12:34:30

67

Views

Boolean operator in Queen problem

Published on 27 Mar 2026 - 12:34

score 64 · Answer 10 · 2020-08-25 13:43:06

64

Views

Binary Operations and Inverse elements in groups and functions

Published on 25 Aug 2020 - 13:43

score 46 · Answer 11 · 2020-08-25 20:46:02

46

Views

Term for the function $f(x,y)=x/\text{(the highest power of y dividing x)}$

Published on 25 Aug 2020 - 20:46

score 125 · Answer 12 · 2020-09-07 12:53:39

125

Views

Binary Operations with Axiomatic Systems

Published on 07 Sep 2020 - 12:53

score 48 · Answer 13 · 2020-09-07 14:59:07

48

Views

Axiomatic Systems, Binary Operations, and Groups

Published on 07 Sep 2020 - 14:59

score 99 · Answer 14 · 2026-03-26 14:19:25

99

Views

A more efficient proof of associativity law for a given binary operation

Published on 26 Mar 2026 - 14:19

score 1.1k · Answer 15 · 2020-09-17 14:42:11

1.1k

Views

What is the correct roundoff of binary?

Published on 17 Sep 2020 - 14:42

List Question

Given integers $a_0, a_1, ... a_n$, count how many $a_i$, $a_j$ whose binary representations logically ANDed equal zero

To prove that an operation is well-defined in modular arithmetic

Are there "tri-commutative" structures for which: $AB \neq BA$, $BC \neq CB$, yet $ABC = BAC = ACB$?

Can this binary-expression be simplified?

How to show that composition is not in general commutative on $\text{Funct}(X, X)$?

Prove that an anticommutative operation on $\lvert X \rvert > 1$ is not commutative and has no identity element

Exactly one right inverse implies invertible?

Commutative monoid structures on $\Bbb{N}$

Boolean operator in Queen problem

Binary Operations and Inverse elements in groups and functions

Term for the function $f(x,y)=x/\text{(the highest power of y dividing x)}$

Binary Operations with Axiomatic Systems

Axiomatic Systems, Binary Operations, and Groups

A more efficient proof of associativity law for a given binary operation

What is the correct roundoff of binary?

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