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Principe de la symétrie perturbee. (French) Zbl 0451.10019

Theorie des nombres, Semin. Delange-Pisot-Poitou, Paris 1979-80, Prog. Math. 12, 77-98 (1981).

MSC:

11J81 Transcendence (general theory)
20F10 Word problems, other decision problems, connections with logic and automata (group-theoretic aspects)