  We propose a framework for unified analysis of mixed methods for elasticity
with weakly symmetric stress. Based on a commuting diagram in the weakly
symmetric elasticity complex and extending a previous stability result, stable
mixed methods are obtained by combining Stokes stable and elasticity stable
finite elements. We show that the framework can be used to analyze most
existing mixed methods for the elasticity problem with elementary techniques.
We also show that some new stable mixed finite elements are obtained.
