Zhihua Chang

activity

20122025

most citedThe automorphism group functor of the N=4 Lie conformal superalgebra

1 citations · 1 across the 11 of their papers we have counts for

collaborators

11 papers

math.QA2025

A Drinfeld Presentation of the Queer Super-Yangian

Zhihua Chang, Yongjie Wang

We introduce a Drinfeld presentation for the super-Yangian $Y (q_{n})$ associated with the queer Lie superalgebra $q_{n}$ . The Drinfeld generators of $\ma…

math.RT2023

Braided tensor products and polynomial invariants for the quantum queer superalgebra

Zhihua Chang, Yongjie Wang

The classical invariant theory for the queer Lie superalgebra $q_{n}$ investigates its invariants in the supersymmetric algebra $$\mathcal{U}_{s,l}^{r,k}:=\mathrm{Sym}\lef…

math.RT2022

The first fundamental theorem of invariant theory for the quantum queer superalgebra

Zhihua Chang, Yongjie Wang

The classical invariant theory for the queer Lie superalgebra is an investigation of the $U (q_{n})$ -invariant sub-superalgebra of the symmetric superalgebra $\mat…

math.RA2021

Remarks on the Second Homology Groups of Queer Lie Superalgebras

Yongjie Wang, Zhihua Chang

The aim of this note is to completely determine the second homology group of the special queer Lie superalgebra $sq_{n} (R)$ coordinatized by a unital associative superalge…

math.RT2018

Howe Duality for Quantum Queer Superalgebras

Zhihua Chang, Yongjie Wang

We establish a new Howe duality between a pair of quantum queer superalgebras $(U_{q^{- 1}} (q_{n}), U_{q} (q_{m}))$ . The key ingredient is the const…

math.RA2015

Central extensions of generalized orthosymplectic Lie superalgebras

Zhihua Chang, Yongjie Wang

The key ingredient of this paper is the universal central extension of the generalized orthosymplectic Lie superalgebra $osp_{m ∣2 n} (R,^{-})$ coordinatized by a unital as…

math.RA2015

Second homology of generalized periplectic Lie superalgebras

Zhihua Chang, Jin Cheng, Yongjie Wang

Let $(R,^{-})$ be an arbitrary unital associative superalgebra with superinvolution over a commutative ring $k$ with $2$ invertible. The second homology of the generalized peri…

math.RA2014

Finite-dimensional subalgebras of the Virasoro algebra

Zhihua Chang

We determine all two-dimensional Lie subalgebras of the centreless Virasoro algebra and complete the characterization of all finite dimensional Lie subalgebras of the complex Viras…

math.RA2013

On twisted large N=4 conformal superalgebras

Zhihua Chang, Arturo Pianzola

We explicitly compute the automorphism group of the large N = 4 conformal superalgebra and classify the twisted loop conformal superalgebras based on the large N = 4 conformal supe…

math.RA2013★ 1 cited

The automorphism group functor of the N=4 Lie conformal superalgebra

Zhihua Chang

In this paper, we study the structure and representability of the automorphism group functor of the N=4 Lie conformal superalgebra over an algebraically closed field k of character…

math-ph2012

Automorphisms and twisted forms of the N = 1, 2, 3 Lie conformal superalgebras

Zhihua Chang, Arturo Pianzola

We classify the N = 1, 2, 3 superconformal Lie algebras of Schwimmer and Seiberg by means of differential non-abelian cohomology, and describe the general philosophy behind this ne…