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Diversity in inside factorial monoids. (English) Zbl 1265.20061

Summary: In the recent paper [Czech. Math. J. 62, No. 3, 795-809 (2012; Zbl 1265.20060)], the last two authors introduced and developed the monoid invariant “diversity” and related properties “homogeneity” and “strong homogeneity”. We investigate these properties within the context of inside factorial monoids, in which the diversity of an element counts the number of its different almost primary components. Inside factorial monoids are characterized via diversity and strong homogeneity. A new invariant complementary to diversity, height, is introduced. These two invariants are connected with the well-known invariant of elasticity.

MSC:

20M14 Commutative semigroups
20M05 Free semigroups, generators and relations, word problems
11B75 Other combinatorial number theory
13A05 Divisibility and factorizations in commutative rings
11N80 Generalized primes and integers

Citations:

Zbl 1265.20060

References:

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