Kirillov, The Yang-Baxter equation, symmetric functions, and Schubert polynomials, in Proceedings of the 5th Conference on Formal Power Series
and Algebraic Combinatorics (Florence, 1993), Discrete Math.
The spherical growth series (SGS) of is the formal power series
It is well known that the field of formal power series
over finite fields has a lot of properties in common to number fields (the finite extension of Q).
It is then natural to investigate the arithmetic properties of Z[[chi]], the ring of formal power series
with integer coefficients.
of Quebec, Montreal) show how formal power series
may be viewed as formal languages with coefficients, and how finite automata may be considered as linear representations of the free monoid.
For T [member of] O we will refer to the formal power series
Four characteristics of this q-umbral calculus are the logarithmic behaviour, the formal power series
, the formal computations, and the frequent use of the infinity symbol.
However, in that case, to have existence and uniqueness of solutions, we were forced to consider formal solutions defined by formal power series
be a formal power series
, and let M, N, E be index sets in N x N = [N.
Brief consideration is given to the p-adic and the formal power series
A substantial part of the literature on the PA and related issues deals with the problem of approximation for analytical functions in zero or, in algebraic terms, the approximation of formal power series
21] Matthias Lenz, Hierarchical zonotopal power ideals, 23rd International Conference on Formal Power Series
and Algebraic Combinatorics (FPSAC 2011) in San Francisco, DMTCS Proceedings, Assoc.