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arXiv · 2602.14657

Computing $A$-resultants via direct images

Friedemann Groh·Matthias Zach
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Abstract

We improve a previously known theoretic method to compute A-resultants for suitable monomial support sets due to Weyman to the extent that it becomes computationally feasible and effective. This is achieved by introducing a new algorithm for the computation of direct images of complexes of coherent sheaves on toric varieties. The procedure does not rely on Gr\"obner basis computations at any stage.

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Friedemann Groh, Matthias Zach. 2026-02-16. Computing $A$-resultants via direct images. https://arxiv.org/abs/2602.14657

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