Left-covariant differential calculi on GL̃q(2)

Abstract

We define a new ${\mathbb Z}_2$-graded quantum (2+1)-space and show that the extended ${\mathbb Z}_2$-graded algebra of polynomials on this ${\mathbb Z}_2$-graded quantum space, denoted by ${\cal F}({\mathbb C}_q^{2\vert1})$, is a ${\mathbb Z}_2$-graded Hopf algebra. We construct a right-covariant differential calculus on ${\cal F}({\mathbb C}_q^{2\vert1})$ and define a ${\mathbb Z}_2$-graded quantum Weyl algebra and mention a few algebraic properties of this algebra. Finally, we explicitly construct the dual ${\mathbb Z}_2$-graded Hopf algebra of ${\cal F}({\mathbb C}_q^{2\vert1})$.