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Computing zero-dimensional tropical varieties via projections

Görlach, Paul and Ren, Yue and Zhang, Leon (2022) 'Computing zero-dimensional tropical varieties via projections.', computational complexity, 31 (1). p. 5.


We present an algorithm for computing zero-dimensional tropical varieties using projections. Our main tools are fast monomial transforms of triangular sets. Given a Gröbner basis, we prove that our algorithm requires only a polynomial number of arithmetic operations, and, for ideals in shape position, we show that its timings compare well against univariate factorization and backsubstitution. We conclude that the complexity of computing positive-dimensional tropical varieties via a traversal of the Gröbner complex is dominated by the complexity of the Gröbner walk.

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Date accepted:No date available
Date deposited:14 July 2022
Date of first online publication:20 May 2022
Date first made open access:14 July 2022

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