Newbetuts

Given four points, determine a condition on a fifth point such that the conic containing all of them is an ellipse

Map from a curve to the projective plane

What is view confusion in perspective projection?

Is there a nice closed form for inversion on the boundary of an orthogonal circle?

proportions of a perspective-deformed rectangle

What path should train tracks follow to appear parallel all the way to the horizon?

How to imagine vector spaces (and projective spaces) over a finite field

How can hypersurfaces "know" the degree of their defining polynomials?

Is the graph of morphism of projective varieties $X \rightarrow Y$ closed in $X \times Y$?

Let $X \subseteq \mathbb{P}_k^n$ be a smooth projective variety over $k$ algebraically closed. What is $\text{dim}_k(\mathcal{O}_{X, x}/m_x^2)$?

Number of points on a line in a finite projective plane

Extension of regular function

pairwise disjoint lines: $l_{1},l_{2},l_{3}, l_{4} \in \mathbb{P}(\mathbb{R}^{4})$

Show that any smooth projective curve of genus zero over a field $K$ is isomorphic to a plane conic over $K$

Painter's algorithm inside and outside test

Projectivization of a vector space: projective geometry definition vs algebraic geometry definition

Non-trivial questions about confocal ellipses

New posts in projective-geometry

Visualization of p-adic numbers

arithmetic and geometric genus for a reducible plane curve

Conic by three points and two tangent lines

Given four points, determine a condition on a fifth point such that the conic containing all of them is an ellipse

Map from a curve to the projective plane

What is view confusion in perspective projection?

Is there a nice closed form for inversion on the boundary of an orthogonal circle?

proportions of a perspective-deformed rectangle

What path should train tracks follow to appear parallel all the way to the horizon?

How to imagine vector spaces (and projective spaces) over a finite field

How can hypersurfaces "know" the degree of their defining polynomials?

Is the graph of morphism of projective varieties $X \rightarrow Y$ closed in $X \times Y$?

Let $X \subseteq \mathbb{P}_k^n$ be a smooth projective variety over $k$ algebraically closed. What is $\text{dim}_k(\mathcal{O}_{X, x}/m_x^2)$?

Number of points on a line in a finite projective plane

Extension of regular function

pairwise disjoint lines: $l_{1},l_{2},l_{3}, l_{4} \in \mathbb{P}(\mathbb{R}^{4})$

Show that any smooth projective curve of genus zero over a field $K$ is isomorphic to a plane conic over $K$

Painter's algorithm inside and outside test

Projectivization of a vector space: projective geometry definition vs algebraic geometry definition

Non-trivial questions about confocal ellipses