نتایج جستجو برای: s alexander
تعداد نتایج: 719583 فیلتر نتایج به سال:
Daniel P. Glavin, Caroline Freissinet, Kristen E. Miller, Jennifer L. Eigenbrode, Anna E. Brunner, Arnaud Buch, Brad Sutter, P. Douglas Archer Jr., Sushil K. Atreya, William B. Brinckerhoff, Michel Cabane, Patrice Coll, Pamela G. Conrad, David Coscia, Jason P. Dworkin, Heather B. Franz, John P. Grotzinger, Laurie A. Leshin, Mildred G. Martin, Christopher McKay, Douglas W. Ming, Rafael Navarro-G...
We study the twisted Alexander invariants of fibred knots. We establish necessary conditions on the twisted Alexander invariants for a knot to be fibred, and develop a practical method to compute the twisted Alexander invariants from the homotopy type of a monodromy. It is illustrated that the twisted Alexander invariants carry more information on fibredness than the classical Alexander invaria...
As a former student of Professor Ostrowski—one of his last— I am delighted to recall here the life and work of one of the great mathematicians of the 20th century. Needless to say that, in view of Ostrowski’s immense and vastly diverse mathematical legacy, this can be done only in a most summary fashion. Further literature on Ostrowski can be found in some of the references at the end of this a...
Cluster Analysis for Large Scale Gene Expression Studies High throughput gene expression analysis is becoming more and more important in many areas of biomedical research. cDNA microarray technology is one very promising approach for high throughput analysis and provides the opportunity to study gene expression patterns on a genomic scale. Thousands or even tens of thousands of genes can be spo...
The classical abelian invariants of a knot are the Alexander module, which is the first homology group of the the unique infinite cyclic covering space of S −K , considered as a module over the (commutative) Laurent polynomial ring, and the Blanchfield linking pairing defined on this module. From the perspective of the knot group, G, these invariants reflect the structure of G/G as a module ove...
There are infinitely many pretzel links with the same Alexander polynomial (actually trivial polynomial). By contrast, in this note we revisit Jones of and prove that, given a natural number S, there is only finite whose polynomials have span S. More concretely, provide an algorithm useful for deciding whether or not knot pretzel. As application identify all knots up to nine crossings, proving ...
J. P. Alexander, C. Bebek, B. E. Berger, K. Berkelman, K. Bloom, T. E. Browder; D. G. Cassel, H. A. Cho, D. M. Coffman, D. S. Crowcroft, M. Dickson, P. S. Drell, D. J. Dumas, R. Ehrlich, R. Elia, P. Gaidaev, M. Garcia-Sciveres, B. Gittelman, S. W. Gray, D. L. Hartill, B. K. Heltsley, S. Henderson, C. D. Jones, S. L. Jones, J. Kandaswamy, N. Katayama, P. C. Kim, D. L. Kreinick, T. Lee, Y. Liu, G...
Alexander Borst studied Biology at the University of Wuerzburg. His PhD work in Martin Heisenberg’s lab demonstrated that the mushroom bodies of Drosophila are indispensable for olfactory learning. He did a postdoc with Karl Goetz at the Max-PlanckInstitute for biological Cybernetics in Tübingen, where he started to work on fly motion vision, a field which he never left since. In 1993, he becam...
In 1978, Alexander Schrijver defined the stable Kneser graphs as a vertex critical subgraphs of graphs. early 2000s, Günter M. Ziegler generalized Schrijver’s construction and s-stable Thereafter Frédéric Meunier determined chromatic number for special cases formulated conjecture on this paper we study generalization For some specific values parameter show that neighborhood complex < s, t &g...
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