ﻻ يوجد ملخص باللغة العربية
The group $G$ is called $n$-rewritable for $n>1$, if for each sequence of $n$ elements $x_1, x_2, dots, x_n in G$ there exists a non-identity permutation $sigma in S_n$ such that $x_1 x_2 cdots x_n = x_{sigma(1)} x_{sigma(2)} cdots x_{sigma(n)}$. Using computers, Blyth and Robinson (1990) verified that the alternating group $A_5$ is 8-rewritable. We report on an independent verification of this statement using the computational algebra system GAP, and compare the performance of our sequential and parallel code with the original one.
We prove that a group is presented by finite convergent length-reducing rewriting systems where each rule has left-hand side of length 3 if and only if the group is plain. Our proof goes via a new result concerning properties of embedded circuits in
We show that groups presented by inverse-closed finite convergent length-reducing rewriting systems are characterised by a striking geometric property: their Cayley graphs are geodetic and side-lengths of non-degenerate triangles are uniformly bounde
Code loops are certain Moufang $2$-loops constructed from doubly even binary codes that play an important role in the construction of local subgroups of sporadic groups. More precisely, code loops are central extensions of the group of order $2$ by a
We focus on ontology-mediated queries (OMQs) based on (frontier-)guarded existential rules and (unions of) conjunctive queries, and we investigate the problem of FO-rewritability, i.e., whether an OMQ can be rewritten as a first-order query. We adopt
We make an investigation of modular $Gamma^{prime}_5 simeq A^{prime}_5$ group in inverse seesaw framework. Modular symmetry is advantageous because it reduces the usage of extra scalar fields significantly. Moreover, the Yukawa couplings are expresse