EJC
2008
13 years 4 months ago
2008
1 Rational functions and minimal factorizations of permutations Let f : C C be a rational function of degree n in one complex variable. A critical point of f is a point z C such...
EJC
2008
13 years 4 months ago
2008
EJC
2008
13 years 4 months ago
2008
EJC
2008
13 years 4 months ago
2008
Partially ordered sets labeled with k labels (k-posets) and their homomorphisms are examined. The homomorphicity order of k-posets is shown to be a distributive lattice. Homomorph...
EJC
2008
13 years 4 months ago
2008
Let X be a set of points in general position in the plane. General position means that no three points lie on a line and no two points have the same x-coordinate. Y X is a cup, r...
EJC
2008
13 years 4 months ago
2008
Gerards and Seymour (see [T.R. Jensen, B. Toft, Graph Coloring Problems, Wiley-Interscience, 1995], page 115) conjectured that if a graph has no odd complete minor of order p, the...
EJC
2008
13 years 4 months ago
2008
EJC
2008
13 years 4 months ago
2008
We provide bounds for the product of the lengths of distinguished shortest paths in a finite network induced by a triangulation of a topological planar quadrilateral.
EJC
2008
13 years 4 months ago
2008
A partial linear space is a non-empty set of points, provided with a collection of subsets called lines such that any pair of points is contained in at most one line and every lin...
EJC
2008
13 years 4 months ago
2008
We consider certain modules of the symmetric groups whose basis elements are called tabloids. As modules of the symmetric groups, some of these are isomorphic to Springer modules. ...