Results 1 to 10 of about 142,622 (162)

Distinguishing local isomorphism classes in quasicrystals by high-order harmonic spectroscopy [PDF]

open access: yesNature Communications
Electron diffraction spectroscopy is a fundamental tool for investigating quasicrystal structures, which unveils the quasiperiodic long-range order. Nevertheless, it falls short in effectively distinguishing separate local isomorphism classes.
Jia-Qi Liu, Xue-Bin Bian
doaj   +2 more sources

Isomorphism of graph classes related to the circular-ones property [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2013
Discrete ...
Andrew R. Curtis   +6 more
doaj   +7 more sources

Prime Fano threefolds of genus 12 with a $G_m$-action [PDF]

open access: yesÉpijournal de Géométrie Algébrique, 2018
We give an explicit construction of prime Fano threefolds of genus 12 with a $G_m$-action, describe their isomorphism classes and automorphism groups.
Alexander Kuznetsov, Yuri Prokhorov
doaj   +3 more sources

Category Theory and New Classes of Semi Bornological Group

open access: yesJournal of Kufa for Mathematics and Computer, 2023
Because, the new knowledge put every new structure in category theory. So, became a source of interest for many researchers, to put every new structure in category theory. This motivates us to put the new structures of semibornological group in category.
Niran Sabah Jasim   +3 more
doaj   +1 more source

Groups with Finitely Many Isomorphism Classes of Non-Normal Subgroups [PDF]

open access: yesAdvances in Group Theory and Applications, 2020
We study groups in which the non-normal subgroups fall into finitely many isomorphism classes. We prove that a locally generalized radical group with this property is abelian-by-finite and minimax.
Leonid A. Kurdachenko   +2 more
doaj   +1 more source

Isomorphism classes of idempotent evolution algebras

open access: yesLinear Algebra and its Applications, 2023
We showed that isomorphism classes of idempotent evolution algebras are in bijection with the orbits of the semidirect product group of the symmetric group and the torus, considered the combinatoric problem of enumeration of isomorphism classes for these algebras over arbitrary finite fields, derived a general counting formula, and obtained explicit ...
Yangjiang Wei, Yi Ming Zou
openaire   +2 more sources

Isomorphisms between pattern classes [PDF]

open access: yesJournal of Combinatorics, 2015
11 ...
Albert, M. H.   +2 more
openaire   +4 more sources

Efficient Enumeration of Higher Order Algebraic Structures

open access: yesIEEE Access, 2020
Algebraic structures are widely studied mathematical structures in abstract algebra. Enumerating higher order algebraic structures is a computationally intensive task due to large number of possible permutations and the presence of many symmetrically ...
Majid Ali Khan
doaj   +1 more source

On groups with two isomorphism classes of central factors [PDF]

open access: yesInternational Journal of Group Theory, 2018
The structure of groups which have at most two isomorphism classes of central factors ($B_2$-groups) are investigated‎. ‎A complete description of $B_2$-groups is obtained in the locally finite case and in the nilpotent case‎.
Serena Siani
doaj   +1 more source

On the Genus of the Idempotent Graph of a Finite Commutative Ring

open access: yesDiscussiones Mathematicae - General Algebra and Applications, 2021
Let R be a finite commutative ring with identity. The idempotent graph of R is the simple undirected graph I(R) with vertex set, the set of all nontrivial idempotents of R and two distinct vertices x and y are adjacent if and only if xy = 0.
Belsi G. Gold, Kavitha S., Selvakumar K.
doaj   +1 more source

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