sigma07-083. 1329KB Jun 04 2011 12:10:06 AM
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For normal operators, it is conjectured that the shell is convex and its closure is polyhedral; the conjecture is proved for indefinite inner product spaces of dimension at most
Linearization by means of the Legendre transformations of a second-order PDE with three independent variables allowed to obtain nonlocal superposition formulae for solutions of
Key words: alternating sign matrices; Young tableaux; staircases; Schubert polynomials; integrable systems.. 2000 Mathematics Subject Classification:
We construct flip morphisms and the corresponding mapping class group transformations and find that in the bordered surfaces case we can enlarge this group allowing transformations
applying the Gessel–Viennot path method with an additional involution and a deformation of paths, we obtain an expression by a positive sum over a set of tuples of paths, which
We review Bacry and L´evy-Leblond’s work on possible kinematics as applied to 2-dimensional spacetimes, as well as the nine types of 2-dimensional Cayley–Klein geo-
On Euclidean space they are defined as smooth functions with values in the corresponding Clifford algebra satisfying a certain system of first order differential equations,
As for the Schwarzschild metric, where there is a difference between the conservation laws obtained for the system of geodesic equations and for the single orbital equation,
