5 citations · 10 across the 12 of their papers we have counts for
13 papers
How Much String to String a Cardioid?
David Richeson
A residue design is an artistic geometric construction in which we have equally-spaced points on a circle numbered 0 through and we join with a line segment each point $k…
A Trisectrix from a Carpenter's Square
David Richeson
In 1928 Henry Scudder described how to use a carpenter's square to trisect an angle. We use the ideas behind Scudder's technique to define a trisectrix---a curve that can be used t…
Gabriel's Paper Horn
David Richeson
Gabriel's horn is the famous mathematical object that has finite volume and infinite surface area. This article gives a template for making Gabriel's horn out of paper cones. It al…
Circular reasoning: who first proved that is a constant?
David Richeson
We answer the question: who first proved that is a constant? We argue that Archimedes proved that the ratio of the circumference of a circle to its diameter is a constant ind…
Spectral decomposition for topologically Anosov homeomorphisms on noncompact and non-metrizable spaces
Tarun Das, Keonhee Lee, David Richeson +1
We introduce topological definitions of expansivity, shadowing, and chain recurrence for homeomorphisms. They generalize the usual definitions for metric spaces. We prove various t…
Entropy for symbolic dynamics with overlapping alphabets
Fabio Drucker, David Richeson, Jim Wiseman
We consider shift spaces in which elements of the alphabet may overlap nontransitively. We define a notion of entropy for such spaces, give several techniques for computing lower b…