S. Rajan

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math.AG2026

Universal Formulas for de Jonquières Loci and Equivariant Contact Problems

Smita Rajan

Given a family of genus $g$ curves $f : Ψ \to S$ and a relative degree $d$ line bundle $L$ on $Ψ$ such that $f_{*} L$ is a vector bundle, the projectivization $P (f_{*} L)$ is strat…

math.AG2024

Kinematic Varieties for Massless Particles

Smita Rajan, Svala Sverrisdóttir, Bernd Sturmfels

We study algebraic varieties that encode the kinematic data for $n$ massless particles in $d$ -dimensional spacetime subject to momentum conservation. Their coordinates are spinor b…