User James Garrett

8 votes

1 answer

696 views

Prove that for an orthogonal matrix $A$ and a certain reflection $R$, the $\mathbb C$-linear part of $RA$ is invertible

asked Jul 5, 2022 at 2:34

2 votes

1 answer

49 views

Does an orthogonal matrix always conmutes or anticonmutes with a matrix $J$ such that $J^2=-I$?

asked Jul 9, 2022 at 11:58

2 votes

0 answers

387 views

Proving that a product of $k$ reflections and an orthogonal matrix has positive determinant

asked Jul 10, 2022 at 18:57

2 votes

2 answers

424 views

Regarding the matrix form of a linear transformation

asked Jul 11, 2022 at 3:10

2 votes

0 answers

158 views

How can I multiply a linear transformation by a antilinear transformation

asked Oct 20, 2022 at 1:57

1 vote

0 answers

94 views

References about Quantum Theory

asked Sep 5, 2022 at 12:17

1 vote

1 answer

75 views

Kernel of a conjugation map

asked Jul 13, 2022 at 2:20

1 vote

1 answer

71 views

If $V=V_1\oplus V_2 = V_3 \oplus V_4$, then are $V_1$ and $V_3$ isomorphic? Same question with $V_2$ and $ V_4$

asked Jul 9, 2022 at 3:38

1 vote

0 answers

77 views

Question about involutions and projections

asked Jul 9, 2022 at 5:58

1 vote

1 answer

138 views

Integral Inequality using Tonelli’s Theorem

asked Nov 26, 2017 at 21:13

1 vote

1 answer

76 views

Limit with Lebesgue Integral

asked Nov 28, 2017 at 2:49

1 vote

0 answers

40 views

How to prove that the is A and a product of reflections R is an element of SO(V)?

asked Jul 3, 2022 at 3:46

0 votes

1 answer

70 views

Measure inequality in $L^2$

asked Jan 23, 2018 at 21:17

0 votes

0 answers

24 views

Density of an even algebra

asked May 15, 2021 at 3:04

0 votes

0 answers

29 views

Kernels (nullspaces) and orthogonal complements

asked Jul 9, 2022 at 15:24

0 votes

1 answer

51 views

Question about the determinant on ortogonal matrices

asked Jul 13, 2022 at 14:56

0 votes

0 answers

67 views

Quick question about the determinant of an orthogonal matrix [duplicate]

asked Jul 11, 2022 at 6:16

0 votes

1 answer

57 views

Antiderivative of a piecewise function

asked Sep 10, 2022 at 16:19

0 votes

2 answers

67 views

Inner product is invariant under reflections in the real hyperplane?

asked Dec 4, 2022 at 3:24

0 votes

1 answer

57 views

Question about the quotient group $a\mathbb{Z}/b\mathbb{Z}$

asked Sep 16 at 22:05

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20 Questions

Prove that for an orthogonal matrix $A$ and a certain reflection $R$, the $\mathbb C$-linear part of $RA$ is invertible

Does an orthogonal matrix always conmutes or anticonmutes with a matrix $J$ such that $J^2=-I$?

Proving that a product of $k$ reflections and an orthogonal matrix has positive determinant

Regarding the matrix form of a linear transformation

How can I multiply a linear transformation by a antilinear transformation

References about Quantum Theory

Kernel of a conjugation map

If $V=V_1\oplus V_2 = V_3 \oplus V_4$, then are $V_1$ and $V_3$ isomorphic? Same question with $V_2$ and $ V_4$

Question about involutions and projections

Integral Inequality using Tonelli’s Theorem

Limit with Lebesgue Integral

How to prove that the is A and a product of reflections R is an element of SO(V)?

Measure inequality in $L^2$

Density of an even algebra

Kernels (nullspaces) and orthogonal complements

Question about the determinant on ortogonal matrices

Quick question about the determinant of an orthogonal matrix [duplicate]

Antiderivative of a piecewise function

Inner product is invariant under reflections in the real hyperplane?

Question about the quotient group $a\mathbb{Z}/b\mathbb{Z}$