List questions from projective-geometry

Published on 14 Feb 2021 - 4:32

208

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What is the point of representing a conic in homogeneous form?

Published on 04 Apr 2026 - 13:42

58

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Proof that the line $\textbf{l}$ tangent to a conic $C$ is $\textbf{l}=C\textbf{x}$

Published on 14 Feb 2021 - 8:23

158

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Are global sections of varieties determined by their local rings?

Published on 02 Apr 2026 - 13:25

2.3k

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An explicit construction of the "Veronese embedding".

Published on 26 Mar 2026 - 9:39

89

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Degenerate conics and its matrix form

Published on 15 Feb 2021 - 1:15

100

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Counting dimension of hypersurfaces in $\mathbb{P}^3$ containing three disjoint lines

Published on 26 Mar 2026 - 9:42

313

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Geometric construction of vanishing points from a length ratio.

Published on 31 Mar 2026 - 5:12

277

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Meaning and determination of Stand Point in Perspective Drawing

Published on 18 Feb 2021 - 2:25

821

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Determining depth in perspective drawing

Published on 19 Feb 2021 - 0:09

95

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Varieties receiving a morphism from projective space.

Published on 20 Feb 2021 - 19:34

72

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How to formulate principle of duality in projective geometry in terms of category theory?

Published on 30 Mar 2026 - 20:44

721

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Finding Measuring Points in three-point perspective drawing

Published on 21 Feb 2021 - 13:56

81

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Projecting $\mathbb R^3$ onto $\mathbb RP^2$

Published on 02 Apr 2026 - 13:22

28

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Why is a line $\mathbf{l}$ in $\mathbb{P}^2$ defined as a linear combination of its 2D null-space?

Published on 26 Mar 2026 - 4:31

List Question

How to get the angle between the inner common tangents to two general ellipse

What is the point of representing a conic in homogeneous form?

Proof that the line $\textbf{l}$ tangent to a conic $C$ is $\textbf{l}=C\textbf{x}$

Are global sections of varieties determined by their local rings?

An explicit construction of the "Veronese embedding".

Degenerate conics and its matrix form

Counting dimension of hypersurfaces in $\mathbb{P}^3$ containing three disjoint lines

Geometric construction of vanishing points from a length ratio.

Meaning and determination of Stand Point in Perspective Drawing

Determining depth in perspective drawing

Varieties receiving a morphism from projective space.

How to formulate principle of duality in projective geometry in terms of category theory?

Finding Measuring Points in three-point perspective drawing

Projecting $\mathbb R^3$ onto $\mathbb RP^2$

Why is a line $\mathbf{l}$ in $\mathbb{P}^2$ defined as a linear combination of its 2D null-space?

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