Question

Let $R$ be the $2 \times 2$ “reflection” matrix which reflects points about the line $y = x$

score 267 · Answer 1 · 2018-04-30 23:03:22

267

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Let $R$ be the $2 \times 2$ “reflection” matrix which reflects points about the line $y = x$

Published on 30 Apr 2018 - 23:03

score 2.1k · Answer 2 · 2026-03-22 10:54:51

2.1k

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Finding a matrix for orthogonal reflection

Published on 22 Mar 2026 - 10:54

score 1.7k · Answer 3 · 2018-05-03 12:51:55

1.7k

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find the matrix for the reflection over a line that goes through the origin and makes the angle pi/17 with the x-axis.

Published on 03 May 2018 - 12:51

score 24 · Answer 4 · 2026-03-22 15:40:46

24

Views

Arithmetic Progressions in Abstract Root Systems

Published on 22 Mar 2026 - 15:40

score 591 · Answer 5 · 2026-03-22 03:37:04

591

Views

Limitations of Cramer's rule?

Published on 22 Mar 2026 - 3:37

score 728 · Answer 6 · 2026-03-21 14:49:33

728

Views

A geometry problem with the reflection of the incenter

Published on 21 Mar 2026 - 14:49

score 2.2k · Answer 7 · 2026-03-22 15:12:06

2.2k

Views

Reflection of a graph about the line $y=2x$.

Published on 22 Mar 2026 - 15:12

score 121 · Answer 8 · 2026-03-22 23:34:25

121

Views

Conjugating the longest element of a parabolic subgroup by longest element in larger parabolic?

Published on 22 Mar 2026 - 23:34

score 381 · Answer 9 · 2018-06-04 03:50:28

381

Views

Geometric Effect of Multiplying an Orthogonal Matrix by a Non-Zero Vector

Published on 04 Jun 2018 - 3:50

score 146 · Answer 10 · 2018-06-06 18:37:32

146

Views

Matrix of a transformation that scales by a factor of 2 perpendicular to the given line

Published on 06 Jun 2018 - 18:37

score 145 · Answer 11 · 2018-06-19 21:31:56

145

Views

Tangency in the Mixtilinear Incircle Configuration

Published on 19 Jun 2018 - 21:31

score 986 · Answer 12 · 2026-03-22 17:15:10

986

Views

Distance of ray reflection inside a unit cube

Published on 22 Mar 2026 - 17:15

score 312 · Answer 13 · 2026-03-17 05:27:31

312

Views

Reflection in Geometric Algebra

Published on 17 Mar 2026 - 5:27

score 62 · Answer 14 · 2026-03-22 22:36:23

62

Views

Multiple use of Fermat's Principle , or Simple, Finite Tessellation (Unfolding)

Published on 22 Mar 2026 - 22:36

score 2.2k · Answer 15 · 2026-03-22 05:27:38

2.2k

Views

Simple reflections have determinant $-1$

Published on 22 Mar 2026 - 5:27

List Question

Let $R$ be the $2 \times 2$ “reflection” matrix which reflects points about the line $y = x$

Finding a matrix for orthogonal reflection

find the matrix for the reflection over a line that goes through the origin and makes the angle pi/17 with the x-axis.

Arithmetic Progressions in Abstract Root Systems

Limitations of Cramer's rule?

A geometry problem with the reflection of the incenter

Reflection of a graph about the line $y=2x$.

Conjugating the longest element of a parabolic subgroup by longest element in larger parabolic?

Geometric Effect of Multiplying an Orthogonal Matrix by a Non-Zero Vector

Matrix of a transformation that scales by a factor of 2 perpendicular to the given line

Tangency in the Mixtilinear Incircle Configuration

Distance of ray reflection inside a unit cube

Reflection in Geometric Algebra

Multiple use of Fermat's Principle , or Simple, Finite Tessellation (Unfolding)

Simple reflections have determinant $-1$

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