Question

Proving bijectivity by finding "the inverse".

score 174 · Answer 1 · 2026-03-22 18:47:35

174

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Proving bijectivity by finding "the inverse".

Published on 22 Mar 2026 - 18:47

score 226 · Answer 2 · 2026-03-19 18:20:51

226

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inverse of lower triangular matrix with factorials

Published on 19 Mar 2026 - 18:20

score 764 · Answer 3 · 2026-03-20 11:13:44

764

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Why is the inverse of the derivative of f not the actual derivative of the inverse of f?

Published on 20 Mar 2026 - 11:13

score 214 · Answer 4 · 2018-01-24 11:43:49

214

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Inverse of a particular matrix: $A = D + aJ$, all entries of $J$ are equal to $1$

Published on 24 Jan 2018 - 11:43

score 301 · Answer 5 · 2026-03-23 06:22:02

301

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Inverse of an Infinite Matrix (with factorials)

Published on 23 Mar 2026 - 6:22

score 933 · Answer 6 · 2026-03-20 05:39:04

933

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inverting a matrix using the LU decomposition approach

Published on 20 Mar 2026 - 5:39

score 6.4k · Answer 7 · 2018-01-24 15:32:05

6.4k

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Why is that if every row of a matrix sums to 1, then the rows of the inverse matrix sums to 1 too?

Published on 24 Jan 2018 - 15:32

score 73 · Answer 8 · 2026-03-19 23:07:28

73

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How can I express a resulting discrepancy? (Proving $\varphi(x \in G) = x^{-1}$ is an automorphism iff G is abelian)

Published on 19 Mar 2026 - 23:07

score 1.7k · Answer 9 · 2026-03-13 18:09:02

1.7k

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Let $A,B$ be $m \times n$ and $n \times m$ matrices, respectively. Prove that if $m > n$, $AB$ is not invertible

Published on 13 Mar 2026 - 18:09

score 56 · Answer 10 · 2018-01-25 09:44:20

56

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finding a bijective map from $ F(m,n)\times F(k,n)$ to $F(m+k,n)$

Published on 25 Jan 2018 - 9:44

score 138 · Answer 11 · 2026-03-24 17:49:20

138

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Complex projective line 1

Published on 24 Mar 2026 - 17:49

score 50 · Answer 12 · 2026-03-24 20:32:12

50

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write the inverse of: $y= 3(4)^{2x+1} + 1$

Published on 24 Mar 2026 - 20:32

score 89 · Answer 13 · 2018-01-26 09:15:44

89

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Under what circumstances can we take this inverse matrix?

Published on 26 Jan 2018 - 9:15

score 79 · Answer 14 · 2018-01-26 17:19:07

79

Views

Does anyone know how to calculate the inverse matrix of $I+\mu\mu^{\top}$?

Published on 26 Jan 2018 - 17:19

score 431 · Answer 15 · 2026-03-23 17:14:45

431

Views

Newton method for function $f :\mathbb R^n \to\mathbb R$

Published on 23 Mar 2026 - 17:14

List Question

Proving bijectivity by finding "the inverse".

inverse of lower triangular matrix with factorials

Why is the inverse of the derivative of f not the actual derivative of the inverse of f?

Inverse of a particular matrix: $A = D + aJ$, all entries of $J$ are equal to $1$

Inverse of an Infinite Matrix (with factorials)

inverting a matrix using the LU decomposition approach

Why is that if every row of a matrix sums to 1, then the rows of the inverse matrix sums to 1 too?

How can I express a resulting discrepancy? (Proving $\varphi(x \in G) = x^{-1}$ is an automorphism iff G is abelian)

Let $A,B$ be $m \times n$ and $n \times m$ matrices, respectively. Prove that if $m > n$, $AB$ is not invertible

finding a bijective map from $ F(m,n)\times F(k,n)$ to $F(m+k,n)$

Complex projective line 1

write the inverse of: $y= 3(4)^{2x+1} + 1$

Under what circumstances can we take this inverse matrix?

Does anyone know how to calculate the inverse matrix of $I+\mu\mu^{\top}$?

Newton method for function $f :\mathbb R^n \to\mathbb R$

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