CZECHOSLOVAK JOURNAL OF PHYSICS, cilt.55, sa.4, ss.463-471, 2005 (SCI-Expanded)
We present a differential calculus on the extension of the quantum plane obtained by considering that the (bosonic) generator x is invertible and by working with polynomials in In x instead of polynomials in x. We construct the quantum Lie algebra associated with this extension and obtain its Hopf algebra structure and its dual Hopf algebra.