Results 161 to 170 of about 84,954 (299)

Semigroups with identity on a manifold [PDF]

, 1959
Paul S. Mostert, Allen Shields
openalex   +1 more source

Numerical semigroups of coated odd elements [PDF]

arXiv
A numerical semigroup $S$ is coated with odd elements (Coe-semigroup), if $\left\{x-1, x+1\right\}\subseteq S$ for all odd element $x$ in $S$. In this note, we will study this kind of numerical semigroups. In particular, we are interested in the study of the Frobenius number, gender and embedding dimension of a numerical semigroup of this type.
arxiv  

Existence of greatest decomposition of a semigroup [PDF]

, 1955
Takayuki Tamura, Naoki Kimura
openalex   +1 more source

Extensions of Semigroups [PDF]

, 1950
A. H. Clifford
openalex   +1 more source

Interpolation of semigroups and integrated semigroups

Semigroup Forum, 1992
Ulf Schlotterbeck, Ulf Schlotterbeck, Ulf Schlotterbeck, Wolfgang Arendt, Wolfgang Arendt, Wolfgang Arendt, Frank Neubrander, Frank Neubrander, Frank Neubrander   +8 more
openaire   +2 more sources

Semigroups satisfying minimal conditions [PDF]

, 1957
W. D. Munn
openalex   +1 more source

Note on idempotent semigroups, IV, Identities of three variables [PDF]

, 1958
Naoki Kimura
openalex   +1 more source

F-semigroups

Algebra and discrete mathematics, 2007
Centro de Matemática da Universidade do ...
Giraldes, E., Smith, M. Paula Marques, Mitsch, H.   +2 more
openaire   +3 more sources

Tetrahedral chains and a curious semigroup

Extracta 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  

On the Equivalence of the Ring, Lattice, and Semigroup of Continuous Functions

, 1956
Melvin Henriksen
openalex   +1 more source