ALGEBRAIC VERSUS TOPOLOGIC ANOMALIES

V. Aldaya, M. Calixto and J. Guerrero

Key words: Group Quantization, Constraints, Anomalies,
        Good and Bad Operators.

1991 Math. Subject Classification: 22E40, 58F06, 81S10, 81T50.

Abstract: Within the frame of a Group Approach to Quantization anomalies
arise in a quite natural way. We present in this talk an analysis
of the basic obstructions that can be found when we try to translate
symmetries of the Newton equations to the Quantum Theory. They fall
into two classes: {\it algebraic} and {\it topologic} according to the
local or global character of the obstruction. We present here one
explicit example of each.