kyle ormsby

Kyle Ormsby

I work in homotopy theory — equivariant, motivic, and chromatic — and in the combinatorics that keeps turning up underneath it. I also build small interactive pictures of the objects I think about.

Professor of mathematics. Currently teaching math 111, math 372.

a loop in Conf11(ℝ²) — the pseudo-Anosov stir (σ₁σ₃σ₅σ₇σ₉ · σ₂⁻¹σ₄⁻¹σ₆⁻¹σ₈⁻¹σ₁₀⁻¹)11 ∈ P11dilatation λ ≈ 5.5007 · entropy log λ ≈ 1.7049 · 0 of 110 letters, then every point is home

featured visualizations

all visualizations →

writing

aug 2026E-mail, but for infinity
nov 2021Aha! A percolating pandemic and a perfect proof
sep 2021Homotopical combinatorics – an introduction for combinatorialists

everything →