List questions from affine-geometry

Published on 10 Nov 2013 - 22:08

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Affine group, semi-direct product and linear transformations

Published on 12 Nov 2013 - 1:10

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alternative definition of Affine map

Published on 14 Nov 2013 - 6:34

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Determining the rotation shape

Published on 19 Nov 2013 - 15:49

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Prove for any four points: $|AB|^2 + |CD|^2 -|BC|^2 - |AD|^2 = 2\cdot \vec{AB}\cdot \vec{DB}$

Published on 19 Nov 2013 - 16:29

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Prove, using affine geometry, that in this figure $\Delta DEF$ is always equilateral

Published on 20 Nov 2013 - 11:01

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How do you rotate a vector by $90^{\circ}$?

Published on 20 Nov 2013 - 15:03

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Finding an affine combination of a point on a triangle

Published on 24 Nov 2013 - 8:14

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Prove, using vectors, that this quadrilateral is a rhombus

Published on 27 Nov 2013 - 15:08

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Get affine transformation matrix from two positions of the object

Published on 28 Nov 2013 - 6:15

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Find $\vec{QB}$ in terms of $\mathbf c$

Published on 05 Dec 2013 - 22:58

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Affine stratification of Grassmannian $\mathbb{G}(1,\mathbb{P}^3)$

Published on 28 Mar 2026 - 12:02

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Affine transformation matrix coefficients

Published on 18 Dec 2013 - 5:00

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How to determine the period of a binary matrix?

Published on 22 Dec 2013 - 7:04

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Good textbook on geometries

Published on 22 Dec 2013 - 17:10

List Question

Proving a vector equality in a triangle without using Thales' theorem.

Affine group, semi-direct product and linear transformations

alternative definition of Affine map

Determining the rotation shape

Prove for any four points: $|AB|^2 + |CD|^2 -|BC|^2 - |AD|^2 = 2\cdot \vec{AB}\cdot \vec{DB}$

Prove, using affine geometry, that in this figure $\Delta DEF$ is always equilateral

How do you rotate a vector by $90^{\circ}$?

Finding an affine combination of a point on a triangle

Prove, using vectors, that this quadrilateral is a rhombus

Get affine transformation matrix from two positions of the object

Find $\vec{QB}$ in terms of $\mathbf c$

Affine stratification of Grassmannian $\mathbb{G}(1,\mathbb{P}^3)$

Affine transformation matrix coefficients

How to determine the period of a binary matrix?

Good textbook on geometries

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