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15
202
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Lines tangent to the same conic

Published on
#conic-sections #projective-geometry
118
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For Desarguian projective planes, coordinatization is inverse to the $K \mapsto K\mathbf{P}^2$ construction

Published on
#reference-request #projective-geometry #combinatorial-geometry #axiomatic-geometry #division-ring
52
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Constructing quadrilaterals under projection with straightedge

Published on
#geometry #projective-geometry #geometric-construction
48
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Can the pole of a polar line with respect to a non-degenerate conic be inside the polar?

Published on
#algebraic-geometry #conic-sections #projective-geometry
390
Views

Relating Camera (position, angle) matrix with Image Skew

Published on
#linear-transformations #projective-geometry #computer-vision
282
Views

When does a fibration has the geometrically integral generic fiber?

Published on
#algebraic-geometry #schemes #projective-geometry #projective-schemes
112
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Rational function on $\mathbb{P}^2$ whose square is identity

Published on
#algebraic-geometry #algebraic-curves #projective-geometry #rational-functions
25
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How is the length of the projection onto a subspace distributed?

Published on
#linear-algebra #statistics #projective-geometry #projection
88
Views

Embed $\mathbb{P}^1$ with $n$ marked points in $\mathbb{P}^{n-2}$

Published on
#algebraic-geometry #projective-geometry
66
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Why is the set $U_i \subset \mathbb{P}^n$ defined by $x_i\neq 0$ a variety?

Published on
#algebraic-geometry #projective-geometry
167
Views

Show that different notions of projectivity are distinct

Published on
#algebraic-geometry #projective-geometry #coherent-sheaves #projective-schemes
84
Views

How to find the equation of a line and of a plane in $\mathbb{P}^3(\mathbb{R})$?

Published on
#geometry #algebraic-geometry #projective-geometry
124
Views

Desargues $\implies$ associativity: Projective planes over non-associative structures?

Published on
#reference-request #projective-geometry #division-algebras #division-ring
65
Views

Nonlinear optimization to find camera rotation and internal camera parameters

Published on
#geometry #nonlinear-optimization #projective-geometry #gradient-descent #image-processing
101
Views

Are smooth projective curves (as defined in Miranda) by definition closed/compact?

Published on
#compactness #projective-geometry #riemann-surfaces

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