B. Abdesselam et al., ON A DEFORMATION OF SL(2) WITH PARAGRASSMANNIAN VARIABLES, Journal of physics. A, mathematical and general, 29(21), 1996, pp. 6729-6736
We propose a new structure U-q(r)(sl(2)). This is realized by multiply
ing delta(q = e(delta), delta is an element of C) by theta, where thet
a is a real nilpotent, paragrassmannian, variable of order r(theta(r+1
) = 0) that we call the order of deformation, the limit r --> infinity
giving back the standard U-q(sl(2)). In particular, we show that for
r = 1 there exists a new R-matrix associated with sl(2). We also prove
that the restriction of the values of the parameters of deformation g
ive nonlinear algebras as particular cases.