Results 161 to 170 of about 138,244,374 (198)

CROSS VARIETIES OF ALGEBRAS

Mathematics of the USSR-Sbornik, 1982
This paper gives sufficient conditions and a method for establishing that a variety generated by a finite algebra is Cross. As a corollary, it is established that the varieties generated by finite alternative, Jordan, Mal'cev, and -algebras are Cross.Bibliography: 14 titles.
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LATTICES OF VARIETIES OF ALGEBRAS

Mathematics of the USSR-Sbornik, 1980
Let be an associative and commutative ring with 1, a subsemigroup of the multiplicative semigroup of , not containing divisors of zero, and some variety of -algebras. A study is made of the homomorphism from the lattice of all subvarieties of into the lattice of all varieties of -algebras, which is induced in a certain natural sense by the ...
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PROJECTIONS OF ALGEBRAIC VARIETIES

Mathematics of the USSR-Sbornik, 1983
This paper gives conditions which are necessary and sufficient in order that a generic projection of a projective variety not have singularities other than those coming from the singularities of the original variety. In particular it turns out that this is possible only for varieties of large codimension. Bibliography: 5 titles.
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Varieties of MV-algebras

Journal of Applied Non-Classical Logics, 1999
ABSTRACT We characterize, for every subvariety V of the variety of all MV- algebras, the free objects in V. We use our results to compute coproducts in V and to provide simple single-axiom axiomatizations of all many-valued logics extending the Lukasiewicz one.
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Decomposing Algebraic Varieties

1999
An algebraic variety is a geometric figure defined by the zeros of a set of multivariate polynomials. This paper explains how to adapt two general zero decomposition methods for efficient decomposition of affine algebraic varieties into unmixed and irreducible components.
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Arithmetic on algebraic varieties

The Annals of Mathematics, 1951
D. G. Northcott has recently contributed some interesting new theorems ([4a], [4b]) to a subject which I introduced in my thesis [1] under the above-given title, and which had been further developed by Siegel [2] and myself [3]. It is my purpose here, by making explicit some concepts which had remained implicit in these papers, to supply what seems to ...
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Algebraic Correspondences Between Algebraic Varieties

The Annals of Mathematics, 1935
Introduction. Attempts have been made recently by Albanese' and Severi2 to extend to surfaces some of the classical results of the theory of correspondence between algebraic curves, and in particular, the theory of correspondences with valency. Albanese's investigations are concerned primarily with the behaviour of continuous systems of curves on the ...
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ALGEBRAIC HOMOLOGY CLASSES ON ALGEBRAIC VARIETIES

Mathematics of the USSR-Izvestiya, 1967
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Epimorphisms in Certain Varieties of Algebras

Order, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gunter Bruns, John Harding
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Varieties of BL-Algebras III: Splitting Algebras

Studia Logica, 2018
The main result of this paper is a characterization of splitting algebras in the variety of BL algebras. This is a continuation of previous work by the author in cooperation with the late Franco Montagna, notably the papers [the author, Soft Comput. 21, No. 1, 153--163 (2017; Zbl 1386.06012); \textit{P. Agliano} and \textit{F. Montagna}, J.
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