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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical programming 10 (1976), S. 245-262 
    ISSN: 1436-4646
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract For a bimatrix game one may visualize two bounded polyhedronsX andY, one for each player. OnX × Y one may visualize, as a graphG, the set of almost-complementary points (see text). $$\bar G$$ consists of an even number of nodes, one for each complementary point (one for the origin, others corresponding to extreme points which are equilibrium points); arcs (extreme point paths of almost complementary points); and possibly loops (paths with no equilibrium points). Shapley has shown that one may assign indices (+) and (−) to nodes, and directions called (+) and (−) to arcs or loops in such a way that, leaving a (+) node one moves always in a (+) direction, terminating at a (−) node. Indices and directions for a point are determined knowing only the point. In this paper, these concepts are generalized to labelled pseudomanifolds. An integer labelling of the vertices identifies theG-set of almost-completely labelled simplexes. It is shown that in order for theG-set of any labelling to be directed as above it is necessary and sufficient that the pseudomanifold be orientable. Realized examples for situations of current interest are also developed.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical programming 12 (1977), S. 328-343 
    ISSN: 1436-4646
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract Some theorems are given which relate to approximating and establishing the existence of solutions to systemsF(x) = y ofn equations inn unknowns, for variousy, in a region of euclideann-space E n . They generalize known theorems. Viewing complementarity problems and fixed-point problems as examples, known results or generalizations of known results are obtained. A familiar use is made of homotopies H: E n × [0, 1]→E n of the formH(x, t) = (1 −t)F 0 (x) + t[F(x) − y] where theF 0 in this paper is taken to be linear. Simplicial subdivisionsT k of E n × [0, 1] furnish piecewise linear approximatesG k toH. The basic computation is via the generation of piecewise linear curvesP k which satisfyG k (x, t) = 0. Visualizing a sequence {T k } of such subdivisions, with mesh size going to zero, arguments are made on connected, compact limiting curvesP on whichH(x, t) = 0. This paper builds upon and continues recent work of C.B. Garcia.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied genetics 71 (1985), S. 481-485 
    ISSN: 1432-2242
    Keywords: Iojap ; Restriction endonuclease analysis ; Zea mays ; Cytoplasmic male sterility
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Cytoplasmic male sterility (cms) was found in plants derived from the F2 progeny of fertile, normal cytoplasm plants of the inbred R181 pollinated with a genetic stock carrying the recessive nuclear gene, iojap. The male sterile plants were maintained by back-crossing with the inbred W182BN which maintains all known sources of cytoplasmic male sterility. The new male sterile progeny were found to exhibit stable male sterility under field conditions in two environments. However, they were partially fertile in the hot, dry summer of 1983 at Aurora, NY. It was found that these lines were restored by lines that characteristically restore cms S group cytoplasms. Pollen phenotype studies indicated that the restoration was gametophytic in nature, also characteristic of the cms S group. Agarose gel electrophoresis of undigested mitochondrial DNA (mtDNA) from these steriles indicated that these lines have the S-1 and S-2 episomes characteristic of the cms S group. Restriction endonuclease digest patterns of mtDNA from these sterile lines digested with BamH I indicated that these steriles fit into the CA subgroup of the cms S group. The new source of cms has been designated cms Ij-1.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1573-6865
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
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  • 5
    Publication Date: 2016-03-29
    Print ISSN: 0946-2171
    Electronic ISSN: 1432-0649
    Topics: Physics
    Published by Springer
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