We develop a lending game in which relationship-specific investments by firms benefit banks and vice versa. We show that even if all firms and banks prefer high-tech relationship loans under the first-best, asymmetric information and investment non-contractibility make them choose low-tech transaction loans. However, governments with intermediate risk ratings can use Groves subsidies for a conc...

We show that for every finite subgroup G of Aut(Fn), the fixed point subcomplex X n is contractible, where Fn is the free group on n letters and Xn is the spine of “auter space” constructed by Hatcher and Vogtmann in [6]. In more categorical language, Xn = EAut(Fn). This is useful because it allows one to compute (see, for example, [7, 8]) the cohomology of normalizers or centralizers of finite...

This is a talk on joint work with Maŕıa José Chávez, Seiya Negami, Antonio Quintero, and Maŕıa Trinidad Villar. A triangulation of a 2-manifold M is a simplicial 2-complex with underlying space homeomorphic to M . The operation of contraction of an edge e in a triangulation T of M is the operation which consists in contracting e to a single vertex and collapsing each face that meets e to a sing...