T. Shaska

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math.AG2026

Orbits and Fields of Definition for Graded Keller Maps

Kyle Kistner, Tanush Shaska

We classify graded Keller maps by the signature of their weight vectors and address which hyperbolic weights support counterexamples and how the nonempty loci are stratified. We co…

math.AG2026

Hulls, linear equivalence, and weighted superelliptic codes

Jurgen Mezinaj, Tanush Shaska

The containment of the code of the meet $G \land A$ in the hull and the identity $G \lor A - D = K - G \land A$ exchanging meet and join are known; imposing that $G \land A$ be principal…

math.AG2026

Orbit counts and twist zeta functions of weighted projective stacks over finite fields

Sajad Salami, Tanush Shaska

Let $F_{q}$ be a finite field and $w = (w_{0}, \dots, w_{n})$ a vector of positive integer weights. Several finite-field counts attached to the weighted projective space $…

math.AG2024

The locus of curves with prescribed automorphism group

K. Magaard, T. Shaska, S. Shpectorov +1

Let G be a finite group, and $g \geq 2$ . We study the locus of genus g curves that admit a G-action of given type, and inclusions between such loci. We use this to study the locus…