Results 131 to 140 of about 24,881 (221)

m-Semigroups, semigroups, and function representations [PDF]

open access: yesFundamenta Mathematicae, 1966
Monk, D., Sioson, F. M.
openaire   +2 more sources

Several locality semigroups, path semigroups and partial semigroups

open access: yes, 2018
Locality semigroups were proposed recently as one of the basic locality algebraic structures, which are studied in mathematics and physics. Path semigroups and partial semigroups were also developed by many authors in the literature. In this paper, we study free objects in the category of refined locality semigroups. It turns out that the path locality
openaire   +3 more sources

Tetrahedral chains and a curious semigroup

open access: yesExtracta Mathematicae, 2019
In 1957 Steinhaus asked for a proof that a chain of identical regular tetrahedra joined face to face cannot be closed. Świerczkowski gave a proof in 1959.
Ian Stewart
doaj  

The semigroup of semigroup extensions

open access: yesSemigroup Forum, 1971
Stepp, J.W., Fulp, R.O.
openaire   +2 more sources

Maximal Dissipation and Well-Posedness of the Euler System of Gas Dynamics. [PDF]

open access: yesArch Ration Mech Anal
Feireisl E   +2 more
europepmc   +1 more source

Ramifications of generalized Feller theory. [PDF]

open access: yesJ Evol Equ
Cuchiero C, Möllmann T, Teichmann J.
europepmc   +1 more source

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