On the formal first cocycle equation for iteration groups of type II Publications, to be read On 1-dimensional formal group laws in characteristic zero Associative Formal Power Series in Two Indeterminates

Associative Formal Power Series in Two Indeterminates

Jointly written with LUDWIG REICH, JENS SCHWAIGER, and JÖRG TOMASCHEK.

Semigroup Forum 88, No. 3, pages 529-540, 2014.

Abstract: Investigating the associativity equation for formal power series in two variables we show that the transcendental associative formal power series are of order one or two and that they can be represented by an invertible formal power series in one variable. We also discuss the convergence of associative formal power series.

harald.fripertinger "at" uni-graz.at, April 22, 2024

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