Delta Sets from Quivers

Kruskal Katona

Atoms of Space

Geometry of Delta Sets

Discrete Hopf Theme

Avata 2 test flight Sunday morning from home in Arlington #avata

Gauss-Bonnet for delta sets

Cartesian Sard

Arnold's theme

Last Geometric Theorem

Finite Topologies

Wu Cohomology for Manifolds

Wu Characteristic

Discrete Knotted Surfaces

Noncommutative space

Playing with 4-manifolds

Riding with a Harvard Seagull

Pentagonal Number Theorem

Colorful Partitions

From Numbers to Particles

Manifolds from Partitions

First snow

Partitions and Graphs

Beautiful Block Island

Flight to the Block Island Wind Farm

Mohegan Bluffs on Block Island

Flying with Seagulls near Point Judith

Adventures with Manifolds

The Lagrange Riddle

A trinity of geometric structures