On the R−automorphisms of formal power series on several indeterminates and with coefficients over the ring R
Keywords:Automorphism, endomorphism, I-adic topology, topological ring, formal power series.
In this paper, we show a way to characterize the R-automorphisms of formal power series on several indeterminates and with coefficients over a commutative ring with identity, R. We show this characterization, as an extension of existing result for the R-automorphisms of the formal power series in an indeterminate, given by O’Malley, M. and Wood, C. in .
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