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A bijection $f$ of a loop $L$ is a half-automorphism if $f(xy)\in \{f(x)f(y),f(y)f(x)\}$, for any $x,y\in L$. A half-automorphism is nontrivial when it is neither an automorphism nor an anti-automorphism. A Chein loop $L=G\cup Gu$ is a…

Group Theory · Mathematics 2020-08-11 Giliard Souza dos Anjos

Code loops are Moufang loops constructed from doubly even binary codes. Then, given a code loop $L$, we ask which doubly even binary code $V$ produces $L$. In this sense, $V$ is called a representation of $L$. In this article we define and…

Group Theory · Mathematics 2026-01-06 Rosemary Miguel Pires , Alexandre Grishkov , Marina Rasskazova

We use groups with triality to construct a series of nonassociative Moufang loops. Certain members of this series contain an abelian normal subloop with the corresponding quotient being a cyclic group. In particular, we give a new series of…

Group Theory · Mathematics 2013-05-16 Alexander N. Grishkov , Andrei V. Zavarnitsine

We initiate the systematic study of loop conditions of arbitrary finite width. Each loop condition is a finite set of identities of a particular shape, and satisfaction of these identities in an algebra is characterized by it forcing a…

Rings and Algebras · Mathematics 2021-01-12 Pierre Gillibert , Julius Jonušas , Michael Pinsker

We define a variety of loops called semiautomorphic, inverse property loops that generalize Moufang and Steiner loops. We first show an equivalence between a previously studied variety of loops. Next we extend several known results for…

Group Theory · Mathematics 2015-02-24 Mark Greer

It is known that with precision till isomorphism that only and only loops $M(F) = M_0(F)/<-1>$, where $M_0(F)$ denotes the loop, consisting from elements of all matrix Cayley-Dickson algebra $C(F)$ with norm 1, and $F$ be a subfield of…

Rings and Algebras · Mathematics 2008-04-15 N. I. Sandu

Moufang loops are one of the best-known generalizations of groups. There is only one countable family of nonassociative finite simple Moufang loops, arising from the split octonion algebras. We prove that every member of this family is…

Group Theory · Mathematics 2007-05-23 Petr Vojtěchovský

The notion of the holomorph of a generalized Bol loop (GBL) is characterized afresh. The holomorph of a right inverse property loop (RIPL) is shown to be a GBL if and only if the loop is a GBL and some bijections of the loop are right…

Group Theory · Mathematics 2015-11-18 Tèmít\dóp\dé Gbóláhàn Jaíyéolá , B. A. Popoola

It is well known that if a group G factorizes as G = NH where H\leq G and N is normal in G then the group structure of G is determined by the subgroups H and N, the intersection of N with H and how H acts on N with a homomorphism f : H ->…

Group Theory · Mathematics 2013-06-27 Stephen M. Gagola

We construct two infinite series of Moufang loops of exponent $3$ whose commutative center (i.e. the set of elements that commute with all elements of the loop) is not a normal subloop. In particular, we obtain examples of such loops of…

Group Theory · Mathematics 2021-04-20 Alexander N. Grishkov , Andrei V. Zavarnitsine

Two constructions due to Dr\'apal produce a group by modifying exactly one quarter of the Cayley table of another group. We present these constructions in a compact way, and generalize them to Moufang loops, using loop extensions. Both…

Group Theory · Mathematics 2007-05-23 Aleš Drápal , Petr Vojtěchovský

Concept of a birepresentation for the Moufang loops is elaborated.

Representation Theory · Mathematics 2008-03-06 Eugen Paal

We partially answer two questions of Goodaire by showing that in a finite, strongly right alternative ring, the set of units (if the ring is with unity) is a Bol loop under ring multiplication, and the set of quasiregular elements is a Bol…

Rings and Algebras · Mathematics 2025-09-10 Michael Kinyon , J. D. Phillips

We count number of groupoids of order 3 with some Bol-Moufang type identities.

Group Theory · Mathematics 2018-12-07 Vladimir Chernov , Alexander Moldovyan , Victor Shcherbacov

We formulate several polynomial identities. One side of these identities has a nice simple form. Whereas the other has a form of a polynomial whose coefficients contain binomial coefficients double factorials or (and) rising factorials. The…

Probability · Mathematics 2023-02-09 Paweł J. Szabłowski

A formal computation proving a new operator identity from known ones is, in principle, restricted by domains and codomains of linear operators involved, since not any two operators can be added or composed. Algebraically, identities can be…

Rings and Algebras · Mathematics 2023-11-20 Clemens G. Raab , Georg Regensburger , Jamal Hossein Poor

It is proved that the following conditions are equivalent for an infinite non-associative commutative Moufang loop $Q$: 1) $Q$ satisfies the minimum condition for subloops; 2) if the loop $Q$ contains a centrally solvable subloop of class…

Rings and Algebras · Mathematics 2008-04-25 N. I. Sandu

We prolong Kunen research about existence of units (left, right, two-sided) in quasigroups with classical Bol-Moufang type identities. These identities were listed in Fenvesh article.

Group Theory · Mathematics 2020-06-23 Natalia Didurik , Victor Shcherbacov

The notion of Moufang set was introduced by Jacques Tits in \cite{Tits92}. We recall briefly the well-established definition and a construction which, under certain conditions, yields a Moufang set. We show that these conditions can be…

Group Theory · Mathematics 2013-12-19 Philippe Cara , Rudger Kieboom

Using groups with triality we obtain some general multiplication formulas in Moufang loops, construct Moufang extensions of abelian groups, and describe the structure of minimal extensions for finite simple Moufang loops over abelian…

Group Theory · Mathematics 2016-06-22 Alexander N. Grishkov , Andrei V. Zavarnitsine