Baryon- and Lepton-Nonconserving Processes

A number of properties of possible baryon- and lepton-nonconserving processes are shown to follow under very general assumptions. Attention is drawn to the importance of measuring ${\ensuremath{\mu}}^{+}$ polarizations and $\frac{{\overline{\ensuremath{\nu}}}_{e}}{{e}^{+}}$ ratios in nucleon decay as a means of discriminating among specific models.