ALGEBRAIC COMBINATORICS

Chomp on numerical semigroups
Algebraic Combinatorics, Volume 1 (2018) no. 3, p. 371-394
We consider the two-player game chomp on posets associated to numerical semigroups and show that the analysis of strategies for chomp is strongly related to classical properties of semigroups. We characterize which player has a winning-strategy for symmetric semigroups, semigroups of maximal embedding dimension and several families of numerical semigroups generated by arithmetic sequences. Furthermore, we show that which player wins on a given numerical semigroup is a decidable question. Finally, we extend several of our results to the more general setting of subsemigroups of ℕ×T, where T is a finite abelian group.
Received : 2017-10-04
Revised : 2018-02-15
Accepted : 2018-02-19
Published online : 2018-06-28
DOI : https://doi.org/10.5802/alco.16
Classification:  05E40,  91A46,  06A07
Keywords: chomp game, poset game, infinite poset, numerical semigroup, symmetric semigroup, Apéry set 
@article{ALCO_2018__1_3_371_0,
     author = {Garc\'\i a-Marco, Ignacio and Knauer, Kolja},
     title = {Chomp on numerical semigroups},
     journal = {Algebraic Combinatorics},
     publisher = {MathOA foundation},
     volume = {1},
     number = {3},
     year = {2018},
     pages = {371-394},
     doi = {10.5802/alco.16},
     language = {en},
     url = {http://alco.centre-mersenne.org/item/ALCO_2018__1_3_371_0}
}

García-Marco, Ignacio; Knauer, Kolja. Chomp on numerical semigroups. Algebraic Combinatorics, Volume 1 (2018) no. 3, pp. 371-394. doi : 10.5802/alco.16. https://alco.centre-mersenne.org/item/ALCO_2018__1_3_371_0/

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