TY - JOUR ID - publications18330 UR - http://tse-fr.eu/pub/29333 IS - n° 3 A1 - Bensoussan, Alain A1 - Frehse, Jens A1 - Grün, Christine N2 - We consider a general Bellman type system of parabolic partial differential equations with a special coupling in the zero order terms. We show the existence of solutions in Lp((0,T);W2,p(O))nW1,p((0,T)×O) by establishing suitable a priori bounds. The system is related to a certain non zero sum stochastic differential game with a maximum of two players. The players control a diffusion in order to minimise a certain cost functional. During the game it is possible that present players may die or a new player may appear. We assume that the death, respectively the birth time of a player is exponentially distributed with intensities that depend on the diffusion and the controls of the players who are alive. VL - vol. 13 TI - On a system of PDEs associated to a game with a varying number of players AV - none EP - 639 Y1 - 2015/// PB - International Press JF - Communications in Mathematical Sciences KW - Bellman systems KW - regularity for PDEs KW - Nash points KW - stochastic differential games SN - 1539-6746 SP - 623 ER -