Question

Is the multiplicative group $\{-1,1\}$ isomorphic with $\{0,1\}$?

score 522 · Answer 1 · 2019-07-09 18:21:05

522

Views

Is the multiplicative group $\{-1,1\}$ isomorphic with $\{0,1\}$?

Published on 09 Jul 2019 - 18:21

score 54 · Answer 2 · 2026-03-25 20:14:14

54

Views

How to efficiently compute $(\frac{x}{x_i})^{-1} \mod x_i$ where $x = \prod_{i=1}^{n} x_i$?

Published on 25 Mar 2026 - 20:14

score 2.4k · Answer 3 · 2026-03-25 11:03:41

2.4k

Views

Using gcd Bezout identity to solve linear Diophantine equations and congruences, and compute modular inverses and fractions

Published on 25 Mar 2026 - 11:03

score 391 · Answer 4 · 2019-07-12 19:19:16

391

Views

One-Step Subgroup Test - Confusing Part of Proof

Published on 12 Jul 2019 - 19:19

score 87 · Answer 5 · 2019-07-12 22:35:57

87

Views

Possible Error in Proving the One-Step Subgroup Test

Published on 12 Jul 2019 - 22:35

score 2.8k · Answer 6 · 2019-07-13 13:52:00

2.8k

Views

Find values of $x$ so that the matrix is invertible

Published on 13 Jul 2019 - 13:52

score 279 · Answer 7 · 2019-07-14 13:56:48

279

Views

How can we better understand multiplicative inverse modulo something?

Published on 14 Jul 2019 - 13:56

score 55 · Answer 8 · 2019-07-15 04:20:10

55

Views

Why must $r$ equal $k$?

Published on 15 Jul 2019 - 4:20

score 54 · Answer 9 · 2019-07-16 10:06:01

54

Views

Finding the inverse of an operator (in closed form)

Published on 16 Jul 2019 - 10:06

score 181 · Answer 10 · 2019-07-17 11:59:58

181

Views

Approximate inverse to a singular diagonal matrix

Published on 17 Jul 2019 - 11:59

score 766 · Answer 11 · 2026-03-27 11:46:53

766

Views

Analytical calculation of specific symmetric 6x6 matrix

Published on 27 Mar 2026 - 11:46

score 124 · Answer 12 · 2026-03-25 11:06:30

124

Views

Proving that $I+A$ is invertable when $A$ is nilpotent: What intuition leads to a particular approach?

Published on 25 Mar 2026 - 11:06

score 521 · Answer 13 · 2019-07-21 10:55:33

521

Views

Inverse of the $(A + iB)$

Published on 21 Jul 2019 - 10:55

score 27 · Answer 14 · 2026-03-27 18:34:47

27

Views

Exhibit left inverse of a function, if it exists

Published on 27 Mar 2026 - 18:34

score 724 · Answer 15 · 2019-07-22 21:59:33

724

Views

Inverse of sum of scalar times matrix plus identity matrix

Published on 22 Jul 2019 - 21:59

List Question

Is the multiplicative group $\{-1,1\}$ isomorphic with $\{0,1\}$?

How to efficiently compute $(\frac{x}{x_i})^{-1} \mod x_i$ where $x = \prod_{i=1}^{n} x_i$?

Using gcd Bezout identity to solve linear Diophantine equations and congruences, and compute modular inverses and fractions

One-Step Subgroup Test - Confusing Part of Proof

Possible Error in Proving the One-Step Subgroup Test

Find values of $x$ so that the matrix is invertible

How can we better understand multiplicative inverse modulo something?

Why must $r$ equal $k$?

Finding the inverse of an operator (in closed form)

Approximate inverse to a singular diagonal matrix

Analytical calculation of specific symmetric 6x6 matrix

Proving that $I+A$ is invertable when $A$ is nilpotent: What intuition leads to a particular approach?

Inverse of the $(A + iB)$

Exhibit left inverse of a function, if it exists

Inverse of sum of scalar times matrix plus identity matrix

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