M. Gerstenhaber et A. Giaquinto, BOUNDARY SOLUTIONS OF THE QUANTUM YANG-BAXTER EQUATION AND SOLUTIONS IN 3 DIMENSIONS, letters in mathematical physics, 44(2), 1998, pp. 131-141
Boundary solutions to the quantum Yang-Baxter (qYB) equation are defin
ed to be those in the boundary of (but not in) the variety of solution
s to the 'modified' qYB equation, the latter being analogous to the mo
dified classical Yang-Baxter (cYB) equation. We construct, for a large
class of solutions r to the modified cYB equation, explicit 'boundary
quantizations', i.e., boundary solutions to the qYB equation of the f
orm I + tr + t(2)r(2) +.... In the last section we list and give quant
izations for all classical r-matrices in sl(3) boolean AND sl(3).