3 papers
math.CO2026
Self-affine quadrangles
Christian Richter, Felix Zimmermann
A quadrangle in the Euclidean plane is called -self-affine if it has a dissection into affine images of itself. All convex quadrangles are known to be -self-affine for ev…
math.MG2024
Canal Classes and Cheeger Sets
Nico Lombardi, Christian Richter, Eugenia SaorÃn Gómez
Giannopoulos, Hartzoulaki and Paouris asked in \cite{GHP} whether the best ratio between volume and surface area of convex bodies sharing a given orthogonal projection onto a fixed…
math.CO2024
Self-affinity of discs under glass-cut dissections
Christian Richter
A topological disc is called -self-affine if it has a dissection into affine images of itself. It is called -gc-self-affine if the dissection is obtained by successive gl…