Results 121 to 130 of about 30,322 (203)

End-regular and End-orthodox generalized lexicographic products of bipartite graphs

open access: yesOpen Mathematics, 2016
A graph X is said to be End-regular (End-orthodox) if its endomorphism monoid End(X) is a regular (orthodox) semigroup. In this paper, we determine the End-regular and the End-orthodox generalized lexicographic products of bipartite graphs.
Gu Rui, Hou Hailong
doaj   +1 more source

Hilbert series of right-angled affine Artin monoid $M(\widetilde{A}^{\infty}_{n})$

open access: yesKuwait Journal of Science, 2017
It is already proved that the growth rate of all the spherical Artin monoids is less than 4. In this paper, we find the Hilbert series of the associated right-angled affine Artin monoid M and also we discuss the recurrence relations and the growth of ...
Zaffar Iqbal   +2 more
doaj  

On Ideals of Submonoids of Power Monoids

open access: yesMathematics
Let S be a numerical monoid, while a Pfin(S)-monoid S is a monoid generated by a finite number of finite non-empty subsets of S. That is, S is a non-cancellative commutative monoid obtained from the sumset of finite non-negative integer sets.
Juan Ignacio García-García   +2 more
doaj   +1 more source

Non-standard sequences

open access: yesМатематичні Студії
The paper shows the existence of a previously unknown relationship between the theory of monoids and category theory. A non-standard mathematical method based on terms from non-standard (not always existing) sequences is proposed.
V. Zhuravlov
doaj   +1 more source

On monoids of metric preserving functions

open access: yesFrontiers in Applied Mathematics and Statistics
Let X be a class of metric spaces and let PX be the set of all f : [0, ∞) → [0, ∞) preserving X, i.e., (Y, f ∘ ρ) ∈ X whenever (Y, ρ) ∈ X. For arbitrary subset A of the set of all metric preserving functions, we show that the equality PX = A has a ...
Viktoriia Bilet   +2 more
doaj   +1 more source

On transfer homomorphisms of Krull monoids. [PDF]

open access: yesBoll Unione Mat Ital (2008), 2021
Geroldinger A, Kainrath F.
europepmc   +1 more source

RNA secondary structure factorization in prime tangles. [PDF]

open access: yesBMC Bioinformatics, 2022
Marchei D, Merelli E.
europepmc   +1 more source

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