List questions from projective-geometry

Published on 31 Mar 2026 - 22:46

221

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Mapping an object's projected 3D path to a pre-defined top-down 2D path.

Published on 27 Mar 2026 - 20:19

662

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Why is the projective line a variety whereas the line with two zeros is not?

Published on 25 Jun 2013 - 19:46

351

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(Complex) Projective Space

Published on 27 Jun 2013 - 12:44

1.2k

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Why is $\mathbb{R} P^n$ called projective space?

Published on 31 Mar 2026 - 19:11

1.1k

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what does project away mean?

Published on 04 Jul 2013 - 20:20

142

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How many cones pass through a given conic section?

Published on 06 Jul 2013 - 6:34

273

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Good book introducing Inconics

Published on 06 Jul 2013 - 7:00

3.1k

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Cremona transformations are birational maps

Published on 10 Jul 2013 - 9:06

376

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fixed lines of a collineation with exactly one fixed point

Published on 10 Jul 2013 - 22:13

522

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Isomorphisms of $\mathbb P^1$

Published on 12 Jul 2013 - 16:03

375

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Confusion about an example in Miles Reid Undergraduate Algebraic Geometry

Published on 14 Jul 2013 - 0:00

161

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Find angle in another view of image

Published on 15 Jul 2013 - 13:52

411

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Möbius transforms on the projective line

Published on 01 Apr 2026 - 0:21

970

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How to see that tangent cones really are cones?

Published on 29 Jul 2013 - 11:30

List Question

Finding the inverse of a map from $CP^1$ to $S^2$

Mapping an object's projected 3D path to a pre-defined top-down 2D path.

Why is the projective line a variety whereas the line with two zeros is not?

(Complex) Projective Space

Why is $\mathbb{R} P^n$ called projective space?

what does project away mean?

How many cones pass through a given conic section?

Good book introducing Inconics

Cremona transformations are birational maps

fixed lines of a collineation with exactly one fixed point

Isomorphisms of $\mathbb P^1$

Confusion about an example in Miles Reid Undergraduate Algebraic Geometry

Find angle in another view of image

Möbius transforms on the projective line

How to see that tangent cones really are cones?

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