Wenhua Zhao

activity

19992005

most citedNCS Systems over Differential Operator Algebras and the Grossman-Larson Hopf Algebras of Labeled Rooted Trees

10 citations · 17 across the 3 of their papers we have counts for

collaborators

4 papers

math.CO2005★ 10 cited

NCS Systems over Differential Operator Algebras and the Grossman-Larson Hopf Algebras of Labeled Rooted Trees

Wenhua Zhao

Let $K$ be any unital commutative $\bQ$-algebra and $W$ any non-empty subset of $\bN^+$. Let $z = (z_{1}, ..., z_{n})$ be commutative or noncommutative free variables and $t$ a formal ce…

math.CO2003★ 3 cited

A New Approach to Order Polynomials of Labeled Posets and Their Generalizations

John Shareshian, David Wright, Wenhua Zhao

In this paper, we first give formulas for the order polynomial $Ω(\Pw; t)$ and the Eulerian polynomial $e(\Pw; λ)$ of a finite labeled poset $(P, ω)$ using the adjacency matrix of…

math.CV2003★ 4 cited

Recurrent Inversion Formulas

Wenhua Zhao

Let $F (z) = z - H (z)$ with $o (H (z)) \geq 2$ be a formal map from $\bC^n$ to $\bC^n$ and $G (z)$ the formal inverse of $F (z)$ . In this paper, we fist study the deformation $F_t(z)=z-tH(z)…

math.QA1999

Semi-infinite forms and topological vertex operator algebras

Yi-Zhi Huang, Wenhua Zhao

Semi-infinite forms on the moduli spaces of genus-zero Riemann surfaces with punctures and local coordinates are introduced. A partial operad for semi-infinite forms is constructed…