Results 111 to 120 of about 565 (128)

Semifield flat flocks

Journal of Geometry, 2005
Using ‘fusion’ methods on finite semifields, a variety of partitions (flocks) of Segre varieties by caps are obtained. The partitions arise from semifield planes and are thus called “semifield flat flocks”. Furthermore, the finite transitive semifield flat flocks are completely determined.
Vikram Jha, Norman L. Johnson
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Finite Semifields

2011
In this chapter we give an overview of the aspects of the theory of finite semifields related to Galois ...
LAVRAUW M, POLVERINO, Olga
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Semifield skeletons of conical flocks

Journal of Geometry, 1991
The authors characterize the semifield flocks of quadratic cones all of whose derivations are semifield flocks.
JOHNSON N. L., LUNARDON, GUGLIELMO, WILKE F. W.   +2 more
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Generalized semifields

A triple (S, +, · ) is said to be semiring iff S is a set and + and · are binary operations on S such that (1) (S,+) is a commutative semigroup, (2) (S, ·) is commutative semigroup, (3) (x+y) ·z=x·z+y·z for all x, y, z, ɛ , S. A semiring (D,+, ·) is said to be a ratio semiring iff (D, ·) is a group.
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Simple skew semifields and semifields

Siberian Mathematical Journal, 1974
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Cyclic Semifields

2007
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Semifields

2001
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Positive ordered 0-semifields

A triple (K,+,.) is called a 0-semifield iff 1) (K,.) is an abelian group with zero 0, 2) (K,+) is a commutative semigroup, 3) for every x, y, z [is an element of a set] K, x(y+z) = xy + xz and 4) for every x [is an element of a set] K, x+0 = x. For a 0-semifield K, let K* denote K- {0}.
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Homogeneous Markov Chains on Semifields

Theory of Probability & Its Applications, 1982
Ayupov, Sh. A., Sarymsakov, T. A.
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Theorems of convex subgroups of semifields and vector spaces over semifields

A triple (K, +, .) is called a semifield if (1) (K, .) is an abelian group with zero 0, (2) (K, +) is a commutative semigroup with identity 0, and (3) for all x, y, z K, x(y+z) = xy+xz. A nonempty subset C={0} is a convex subgroup of K if (1) for all x, y C, y = 0 implies x/y C, and (2) for all x, y C, alpha, beta K, with alpha + beta = 1, alpha x ...
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