Results 31 to 40 of about 309 (55)

On the lattice of overcommutative varieties of monoids

, 2017
It is unknown so far, whether the lattice of all varieties of monoids satisfies some non-trivial identity. The objective of this note is to give the negative answer to this question. Namely, we prove that any finite lattice is a homomorphic image of some
Gusev, S. V.
core   +1 more source

A new algebraic invariant for weak equivalence of sofic subshifts [PDF]

, 1997
It is studied how taking the inverse image by a sliding block code affects the syntactic semigroup of a sofic subshift. Two independent approaches are used: ζ-semigroups as recognition structures for sofic subshifts, and relatively free profinite ...
Chaubard, Laura, Costa, Alfredo
core   +4 more sources

Formalized proof, computation, and the construction problem in algebraic geometry [PDF]

, 2004
An informal discussion of how the construction problem in algebraic geometry motivates the search for formal proof methods. Also includes a brief discussion of my own progress up to now, which concerns the formalization of category theory within a ZFC ...
Simpson, Carlos T.
core  

On Varieties of Ordered Automata

, 2019
The Eilenberg correspondence relates varieties of regular languages to pseudovarieties of finite monoids. Various modifications of this correspondence have been found with more general classes of regular languages on one hand and classes of more complex ...
H Straubing, I Simon, J Brzozowski, J Reiterman, J-E Pin, JÉ Pin, JÉ Pin, JÉ Pin, JÉ Pin, L Chaubard, M Kunc, MP Schützenberger, MV Volkov, O Klíma, R McNaughton, S Cho, S Eilenberg, Z Ésik   +17 more
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E-varieties and E-pseudovarieties of regular semigroups [manuscript ]

2021
This thesis was scanned from the print manuscript for digital preservation and is copyright the author. Researchers can access this thesis by asking their local university, institution or public library to make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
openaire   +1 more source

Theories of Birkhoff type in pseudovarieties and e-varieties of regular semigroups

1998
No description ...
openaire   +1 more source

A note on the finite basis and finite rank properties for pseudovarieties of semigroups

Semigroup Forum, 2017
Jorge Almeida, M H Shahzamanian
exaly  

Minimal non-permutative pseudovarieties of semigroups III

Algebra Universalis, 1985
Jorge Almeida
exaly  

On the lattice of sub-pseudovarieties of DA

Semigroup Forum, 2010
Manfred Kufleitner, Pascal Weil
exaly  

Pseudovarieties, Regular Semigroups and Semidirect Products

Journal of the London Mathematical Society, 1998
K Auinger, P G Trotter
exaly