Издательство Taylor&Francis по журналам "Quaestiones Mathematicae"
Отображаемые элементы 1-20 из 696
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(Taylor & Francis Group, 1984-01-01)A notion of G-regularity is introduced for a Γ-ring M, and from this notion a Brown-McCoy radical, B(M) is defined. B(M) is shown to be a radical in the sense of Kurosh and Amitsur, and analogies of various well-known ...
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(Taylor & Francis Group, 1991-01-01)We introduce the concepts of weak Z-topology and ultra-weak Z-topology on the space L(E,F) of continuous linear functions from E into F, where E and F are locally convex spaces. The dual spaces of L(E,F) under these ...
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(Taylor & Francis Group, 1988-01-01)If G is a graph of order p and size q, we associate with each vertex v ε G the pair (d(v)—σ, Δ—d(v)) which we call the coordinate (representation) of v in G. The Cartesian graph of G, denoted by cart(G), is defined as ...
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(Taylor & Francis Group, 1992-07-01)The paper describes numerical tests of the accuracy of a general relativity code for the non-rotating axisymmetric characteristic initial value problem. The results compare reasonably well with theoretical expectations.
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(Taylor & Francis Group, 1995-04-01)In this paper we present a characterization of complex lattice homomorphisms on Banach lattice algebras.
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(Taylor & Francis Group, 1995-04-01)We define a new class B of sets of strongly summable and bounded sequences, determine their first and second α- and β-duals, and characterize linear operators on the spaces in B.
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(Taylor & Francis Group, 1986-01-01)A connected, nontrivial, simple graph of order v is said to be α,β destructible if α,β are factors of v and an α-set of edges, E', exists whose removal from G isolates exactly the vertices in α,β-set V'. Graphs which are ...
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(Taylor & Francis Group, 1989-01-01)In this note we extend the concept of best approximation to linear 2-normed spaces. We define proxi-minal, semi-Chebyshev, and Chebyshev sets in linear 2-normed spaces. A linear 2-normed space X is said to be strictly ...
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(Taylor & Francis Group, 1983-01-01)Let G be an abelian group and g ε G; for an abelian group A, define TA = {a ε A: g⊗a=0 in G⊗A}. T is called the tensor-induced preradical determined by the pair (G,g). In this work a complete description of T is given in ...
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(Taylor & Francis Group, 1980-01-01)In this note we present a characterization of the band of kernel operators in the abstract setting of Riesz spaces. Under the assumptions that E is an Archimedean Riesz space and F a Dedekind complete Riesz space separated ...
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(Taylor & Francis Group, 1993-07-01)A cooperation graph is defined as a finite, simple, connected, noncomplete, labelled graph with at least three vertices. A non-negative normalized cohesion index is defined for such graphs. The vertices with positive index ...
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(Taylor & Francis Group, 1985-01-01)The Hardy, Littlewood, Polya class of power means (wiza1 + …+wn zan)1/a, including the usual harmonic, geometric, and arithmetic mean values, has been generalized by Bruno deFinetti and B. C. Carlson. These two generalizations ...
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(Taylor & Francis Group, 1990-01-01)An F-free colouring of a graph G is a partition {V1,V2,…,Vn} of the vertex set V(G) of G such that F is not an induced subgraph of G[Vi] for each i. A graph is uniquely F-free colourable if any two .F-free colourings induce ...
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(Taylor & Francis Group, 1985-01-01)It is shown that the theory presented in the paper cited in the title can be extended almost effortlessly to encompass a class of gauge transformations that is considerably more general than that treated originally.
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(Taylor & Francis Group, 1992-10-01)Let d be a positive integer, and F be a field of characteristic zero. Suppose that for each positive integer n, In, is a GLn,(F)- invariant of forms of degree d in x1, …, xn, over F. We call {In} an additive family of ...
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(Taylor & Francis Group, 1993-04-01)An infinite game is introduced, motivated by additive properties of certain classes of sets of real numbers.
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(Taylor & Francis Group, 1976-01-01)A general theory of adjoint variational problems is formulated for essentially arbitrary Lagrangians involving m independent and n dependent variables, together with the first derivatives of the latter, This approach ...
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(Taylor & Francis Group, 1993-01-01)Let X, Y be topological spaces. We denote by Yx, C(X, Y) and G(X, Y) the set of all functions from X to Y, the set of all continuous functions and of all functions with closed graphs respectively. Now as is well-known, ...
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(Taylor & Francis Group, 1991-10-01)Every kind of pullback-stability in a topological category (A,U), for example, the (concrete) cartesian closedness, the universal topologicity, the heredity of (A,U), etc., is characterized by an internal order-theoretic ...
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(Taylor & Francis Group, 1978-01-01)1. This note is concerned with inequalities of the form where the open interval (a,b) of integration may be bounded or unbounded, i.e. −∞ ⋚ a ⋚ b ⋚ ∞, the coefficients p, q and w are real-valued on (a,b), w is non-negative, ...
Отображаемые элементы 1-20 из 696