List questions from projective-geometry

Published on 13 Dec 2020 - 12:11

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Homography in projective spaces

Published on 13 Dec 2020 - 20:35

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If the line at infinity is a secant line of a conic then the conic is a hyperbola?

Published on 17 Dec 2020 - 16:10

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Div, grad, rot in projective geometry?

Published on 27 Mar 2026 - 8:39

386

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Exercise 1.7 from Silverman's AEC

Published on 28 Dec 2020 - 0:59

167

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What kind of a locus $Y$ describe when moving $\Omega $?

Published on 31 Dec 2020 - 14:57

708

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Non-degenerate conic is projectively equivalent to smooth conic

Published on 02 Apr 2026 - 10:09

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line at infinity intersected with a line from points of the parabola

Published on 25 Mar 2026 - 10:57

148

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What is the meaning of a homography matrix determinant?

Published on 02 Apr 2026 - 10:14

36

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Consider the set of points in $\operatorname{PG}(3,q)$ given by $X_0^2+X_1^2+X_2^2+X_3^2=0$. Show that no plane is disjoint to this set.

Published on 09 Jan 2021 - 17:12

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How to portray a dome as a projection

Published on 10 Jan 2021 - 15:59

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Properties of Measuring Points in perspective drawing

Published on 11 Jan 2021 - 2:58

31

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Projective line $P_{1}$ as bivariate family

Published on 14 Jan 2021 - 17:26

200

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Are these two curves birationally equivalent?

Published on 26 Mar 2026 - 7:38

316

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Charts for the complex projective line .

Published on 02 Apr 2026 - 10:07

List Question

5 points determine a conic uniquely

Homography in projective spaces

If the line at infinity is a secant line of a conic then the conic is a hyperbola?

Div, grad, rot in projective geometry?

Exercise 1.7 from Silverman's AEC

What kind of a locus $Y$ describe when moving $\Omega $?

Non-degenerate conic is projectively equivalent to smooth conic

line at infinity intersected with a line from points of the parabola

What is the meaning of a homography matrix determinant?

Consider the set of points in $\operatorname{PG}(3,q)$ given by $X_0^2+X_1^2+X_2^2+X_3^2=0$. Show that no plane is disjoint to this set.

How to portray a dome as a projection

Properties of Measuring Points in perspective drawing

Projective line $P_{1}$ as bivariate family

Are these two curves birationally equivalent?

Charts for the complex projective line .

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