Noncommutative Symmetric Functions and the Inversion Problem
| dc.creator | Zhao, Wenhua | |
| dc.date | 2005-09-07 | |
| dc.date | 2005-09-09 | |
| dc.date.accessioned | 2026-07-07T12:36:38Z | |
| dc.date.available | 2026-07-07T12:36:38Z | |
| dc.description | Let $K$ be any unital commutative $\bQ$-algebra and $z=(z_1, z_2, ..., z_n)$ commutative or noncommutative variables. Let $t$ be a formal central parameter and $\kttzz$ the formal power series algebra of $z$ over $K[[t]]$. In \cite{GTS-II}, for each automorphism $F_t(z)=z-H_t(z)$ of $\kttzz$ with $H_{t=0}(z)=0$ and $o(H(z))\geq 1$, a \cNcs (noncommutative symmetric) system (\cite{GTS-I}) $\Oft$ has been constructed. Consequently, we get a Hopf algebra homomorphism $\cSft: \cNsf \to \cDzz$ from the Hopf algebra $\cNsf$ (\cite{G-T}) of NCSF's (noncommutative symmetric functions). In this paper, we first give a list for the identities between any two sequences of differential operators in the \cNcs system $\Oft$ by using some identities of NCSF's derived in \cite{G-T} and the homomorphism $\cSft$. Secondly, we apply these identities to derive some formulas in terms of differential operator in the system $\Oft$ for the Taylor series expansions of $u(F_t)$ and $u(F_t^{-1})$ $(u(z)\in \kttzz)$; the D-Log and the formal flow of $F_t$ and inversion formulas for the inverse map of $F_t$. Finally, we discuss a connection of the well-known Jacobian conjecture with NCSF's. | |
| dc.description | Latex, 33 pages. Some misprints have been corrected | |
| dc.identifier | https://arxiv.org/abs/math/0509135 | |
| dc.identifier | http://arxiv.org/abs/math/0509135 | |
| dc.identifier | Internat. J. Algebra Comput., 18 (2007), no. 5, 869--899. | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/218158 | |
| dc.subject | Complex Variables | |
| dc.subject | Combinatorics | |
| dc.subject | 05E05, 14R10, 14C15 | |
| dc.title | Noncommutative Symmetric Functions and the Inversion Problem | |
| dc.type | text |