A mathematical programming problem with singular mixed pointwise-integral constraints

We investigate an infinite dimensional optimization problem which constraints are singular integral-pointwise ones. We give some partial results of existence for a solution in some particular cases. However, the lack of compactness, even in L1 prevents to conclude in the general case.We give an existence result for a weak solution (as a measure) that we are able to describe. The regularity of such a solution is still an open problem.  2004 Elsevier Inc. All rights reserved