  A zero-dimensional analogue of Witten's global gauge anomaly is considered.
For example, a zero-dimensional reduction of the two-dimensional $\SO(2N)$
Yang-Mills theory with a single Majorana-Weyl fermion in the fundamental
representation suffers from this anomaly. Another example is a zero-dimensional
reduction of two- and three-dimensional $\SU(2N_c)$ Yang-Mills theories which
couple to a single Majorana fermion in the adjoint representation. In this
case, any expectation value is either indeterminate or infinite.
