Article ID: | iaor20124910 |
Volume: | 73 |
Issue: | 4 |
Start Page Number: | 621 |
End Page Number: | 647 |
Publication Date: | Oct 2012 |
Journal: | Theory and Decision |
Authors: | Bauer Christian |
Keywords: | belief functions |
For non‐additive set functions, the independent product, in general, is not unique and the Fubini theorem is restricted to slice‐comonotonic functions. In this paper, we use the representation theorem of Gilboa and Schmeidler (1995) to extend the Möbius product for non‐additive set functions to non‐finite spaces. We extend the uniqueness result of Ghirardato (1997) for products of two belief functions and weaken the requirements on the marginals necessary to obtain the Fubini property in the product. More importantly, we show that for the Möbius product one side of the Fubini theorem holds for all integrable functions if one of the marginals either is a probability or a convex combination of a chain of unanimity games, i.e., we relax the requirement of slice‐comonotonicity and enrich the set of possible applications.