‚P‚QŒŽ@‚T“úi…j‚P‚TF‚O‚O` CŽm˜_•¶’†ŠÔ”•\‰ï ‚VŒŽ‚P‚P“úi…j‚P‚UF‚R‚O`‚P‚VF‚R‚O Delphine PolŽ (–kŠC“¹‘åŠwCJSPS) On a generalization of Solomon Terao formula Abstract: The characteristic polynomial of a subspace arrangement is an important combinatorial invariant which carries information about the combinatorics and the topology of the arrangement and its complement. The Solomon-Terao formula gives the relation between the characteristic polynomial of an hyperplane arrangement and the Hilbert-Poincaré series of the modules of logarithmic differential forms. We will study in this talk a generalization of this formula for equidimensional subspace arrangements of higher codimension. The generalized Solomon-Terao formula is satisfied by all line arrangements, but we will give examples showing that it may not be satisfied by some higher dimensional subspace arrangements.