Universitext Editorial Board (North America): S. Axler K.A. Ribet Claudio Procesi Lie Groups An Approach through Invariants and Representations ^ rineer Spri & Claudio Procesi Dipartimento di Matematica "G. Castelnouvo" Universita di R o m a " L a Sapienza" 00185 Rome Italy
[email protected] .it Editorial Board America): (North S. Axler Mathematics D e p a r t m e n t San Francisco State University San Francisco, C A 94132 USA
[email protected] K.A. Ribet Mathematics Department Unive