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Displaying 81 – 100 of 109

Invariance groups of finite functions and orbit equivalence of permutation groups

Eszter K. Horváth, Géza Makay, Reinhard Pöschel, Tamás Waldhauser (2015)

Open Mathematics

Which subgroups of the symmetric group Sn arise as invariance groups of n-variable functions defined on a k-element domain? It appears that the higher the difference n-k, the more difficult it is to answer this question. For k ≤ n, the answer is easy: all subgroups of Sn are invariance groups. We give a complete answer in the cases k = n-1 and k = n-2, and we also give a partial answer in the general case: we describe invariance groups when n is much larger than n-k. The proof utilizes Galois connections...

Invariant semigroups of othodox semigroups.

T.S. Blyth, M.H. Almeida-Santos (1996)

Semigroup forum

Invariant sets in the group of isometries of a lattice-ordered group.

Josep Grané Manlleu (1981)

Stochastica

This paper deals with the invariant sets in the group of isometries of a lattice-ordered group. It is shown that all the invariant sets are union of some transitivity subsets of the spheres.

Inverse and partially ordered semigroups

Liam O'Carroll (1971/1972)

Séminaire Dubreil. Algèbre et théorie des nombres

Inverse semirings and their lattice of congruences

Bedřich Pondělíček (1996)

Czechoslovak Mathematical Journal

Inverse topology in MV-algebras

Fereshteh Forouzesh, Farhad Sajadian, Mahta Bedrood (2019)

Mathematica Bohemica

We introduce the inverse topology on the set of all minimal prime ideals of an MV-algebra $A$ and show that the set of all minimal prime ideals of $A$ , namely $Min (A)$ , with the inverse topology is a compact space, Hausdorff, $T_{0}$ -space and $T_{1}$ -space. Furthermore, we prove that the spectral topology on $Min (A)$ is a zero-dimensional Hausdorff topology and show that the spectral topology on $Min (A)$ is finer than the inverse topology on $Min (A)$ . Finally, by open sets of the inverse topology, we define and study a congruence relation...

Inversion in a class of lattice-ordered algebras

Anthony W. Hager, Philip Nanzetta, Donald Plank (1972)

Colloquium Mathematicae

Inversions on complete lattices and Girard quantales

Bohumil Šmarda (1997)

Acta Mathematica et Informatica Universitatis Ostraviensis

Invertible ideals and Gaussian semirings

Shaban Ghalandarzadeh, Peyman Nasehpour, Rafieh Razavi (2017)

Archivum Mathematicum

In the first section, we introduce the notions of fractional and invertible ideals of semirings and characterize invertible ideals of a semidomain. In section two, we define Prüfer semirings and characterize them in terms of valuation semirings. In this section, we also characterize Prüfer semirings in terms of some identities over its ideals such as $(I + J) (I \cap J) = I J$ for all ideals $I$ , $J$ of $S$ . In the third section, we give a semiring version for the Gilmer-Tsang Theorem, which states that for a suitable family...

In this paper we investigate the relations between isometries and direct product decompositions of generalized $M V$ -algebras.

Currently displaying 81 – 100 of 109

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Displaying 81 – 100 of 109

Invariance groups of finite functions and orbit equivalence of permutation groups

Invariant semigroups of othodox semigroups.

Invariant sets in the group of isometries of a lattice-ordered group.

Inverse and partially ordered semigroups

Inverse semirings and their lattice of congruences

Inverse topology in MV-algebras

Inversion in a class of lattice-ordered algebras

Inversions on complete lattices and Girard quantales

Invertible ideals and Gaussian semirings

Irreducibility and generation in continuous lattices.

Irreducible coverings by cliques and Sperner's theorem.

Irreducible elements of posets

Isometries and direct decompositions of pseudo MV-algebras

Isometries in non-abelian multilattice groups

Isometries in ordered groups

Isometries in Riesz groups

Isometries of generalized $M V$ -algebras

Isometries of lattice ordered groups

Isometries of $M V$ -algebras

Isometries of multilattice groups

Currently displaying 81 – 100 of 109