Algebra and Logic
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Locally finitely approximable and locally representable varieties of algebras
Algebra and Logic - Tập 16 - Trang 1-16 - 1977
A method for obtaining efficient lower bounds for monotone complexity
Algebra and Logic - Tập 26 Số 1 - Trang 1-18 - 1987
Lattices embeddable in subsemigroup lattices. II. Cancellative semigroups
Algebra and Logic - Tập 45 - Trang 248-253 - 2006
Repnitskii proved that any lattice embeds in a subsemigroup lattice of some commutative, cancellative, idempotent free semigroup with unique roots. In that proof, use is made of a result by Bredikhin and Schein stating that any lattice embeds in a suborder lattice of suitable partial order. Here, we present a direct proof of Repnitskii’s result which is independent of Bredikhin-Schein’s, thus givi......
The Kegel--Shemetkov Problem on Lattices of Generalized Subnormal Subgroups of Finite Groups
Algebra and Logic - Tập 41 - Trang 228-236 - 2002
We study into formations
$$\mathfrak{F}$$
for which the set of all
$$\mathfrak{F}$$
-subnormal (
$$\mathfrak{F}$$
......
On the relation between the class of all context-free languages and the class of deterministic context-free languages
Algebra and Logic - - 1969
Locally solvable periodic groups of finitary transformations
Algebra and Logic - Tập 31 - Trang 331-342 - 1992
Primitive Prime Divisors of Orders of Suzuki–Ree Groups
Algebra and Logic - Tập 62 - Trang 41-49 - 2024
There is a well-known factorization of the number 22m + 1, with m odd, related to the orders of tori of simple Suzuki groups: 22m +1 is a product of a = 2m + 2(m+1)/2 +1 and b = 2m − 2(m+1)/2 + 1. By the Bang–Zsigmondy theorem, there is a primitive prime divisor of 24m − 1, that is, a prime r that divides 24m − 1 and does not divide 2i − 1 for any 1 ≤ i < 4m. It is easy to see that r divides 22m +......
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