List questions from affine-geometry

Published on 26 Mar 2026 - 1:03

54

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What is the definition of affine independence then?

Published on 25 Mar 2026 - 17:20

267

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Finding the missing centre or vertex of a projected rectangle.

Published on 25 Mar 2026 - 6:08

52

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Inertial frame and isometry

Published on 13 Dec 2023 - 11:07

80

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Show that if $f$ maps the straight lines to the straigth lines then $f$ must be an affine map

Published on 17 Dec 2023 - 11:25

61

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If $T$ maps the lines to the lines then $T$ is additive

Published on 26 Mar 2026 - 4:34

277

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Affine function $\mathbb{R}^n \to \mathbb{R}^n$ preserves angles if it maps a ball to a ball

Published on 22 Dec 2023 - 14:53

346

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If $T:\ \mathbb R^n\longrightarrow\mathbb R^n$ is additive then $T$ is linear

Published on 26 Dec 2023 - 18:08

128

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a full proof for the Fundamental Theorem of affine geometry

Published on 28 Dec 2023 - 17:57

55

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affine geometries that are self-dual matroids.

Published on 25 Mar 2026 - 17:24

24

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Vandermonde hyperplanes: affine general position?

Published on 29 Dec 2023 - 20:47

56

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Some properties in Projective Geometry

Published on 25 Mar 2026 - 19:00

47

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When are projective, affine geometries uniform matroids?

Published on 25 Mar 2026 - 20:35

43

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Understanding contraction in hyperplane arrangements.

Published on 26 Mar 2026 - 1:07

22

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Characteristic polynomial and bounded regions.

Published on 26 Mar 2026 - 1:01

List Question

Is open always Zariski open in the context of Algebraic geometry, unless otherwise mentioned?

What is the definition of affine independence then?

Finding the missing centre or vertex of a projected rectangle.

Inertial frame and isometry

Show that if $f$ maps the straight lines to the straigth lines then $f$ must be an affine map

If $T$ maps the lines to the lines then $T$ is additive

Affine function $\mathbb{R}^n \to \mathbb{R}^n$ preserves angles if it maps a ball to a ball

If $T:\ \mathbb R^n\longrightarrow\mathbb R^n$ is additive then $T$ is linear

a full proof for the Fundamental Theorem of affine geometry

affine geometries that are self-dual matroids.

Vandermonde hyperplanes: affine general position?

Some properties in Projective Geometry

When are projective, affine geometries uniform matroids?

Understanding contraction in hyperplane arrangements.

Characteristic polynomial and bounded regions.

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