a Laboratoire de mathématiques, Université du Havre, F.S.T, B.P. 540, 76058, Le Havre, France
b Université du Havre, I.U.T, B.P. 4006, 76610, Le Havre, France
c Département de Maths, Ecole Normale Supérieure, 16050 Kouba, Alger, Algeria
Abstract:
We prove the optimal regularity, in Sobolev spaces, of the solution of a parabolic equation set in a triangular domain T. The right-hand term of the equation is taken in Lebesgue space Lp(T). The method of operators sums in the non-commutative case is referred to.