The aim of this paper is to discuss some recent developments of the perturbation method introduced first by Kato for the Kolmogoroff equation and later extended by Voigt and Arlotti to deal with a ...

SIAM Journal on Applied Mathematics, Vol. 31, No. 2 (Sep., 1976), pp. 379-384 (6 pages) Given a real n × n matrix M and vector q, the linear complementarity problem is to find vectors w and z such ...

Thousands of particles of light can merge into a type of 'super photon' under suitable conditions. Physicists call such a state a photon Bose-Einstein condensate. Researchers have now shown that this ...

of a photonic Bose-Einstein condensate (yellow) in a bath of dye molecules (red) that has been perturbated by an external light source (white flash). Thousands of particles of light can merge into a ...