An Elementary Proof of the Fundamental Theorem of Tropical Algebra

Details An Elementary Proof of the Fundamental Theorem of Tropical Algebra An Elementary Proof of the Fundamental Theorem of Tropical Algebra

2007-07-17

arxiv.org/abs/0707.2591v1

Mathematics

Combinatorics

8 pages

Scientific paper

In this paper we give an elementary proof of the Fundamental Theorem of Algebra for polynomials over the rational tropical semi-ring. We prove that, tropically, the rational numbers are algebraically closed. We provide a simple algorithm for factoring tropical polynomials of a single variable. A central idea is the concept of least-coefficient polynomials as representatives for classes of functionally equivalent polynomials. This idea has importance far beyond the proof of the Fundamental Theorem of Tropical Algebra.

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