Supported by National Natural Science Foundation of China(Grant Nos.11571145 and 11271165);the Youth Foundation of National Natural Science Foundation of China(Grant Nos.11101350 and 11302052);the Natural Science Foundation of Fujian Province(Grant No.2010J05001)
Let L be the derivation Lie algebra of C[t1^±1 , t2^±1 ]. Given a triangle decomposition L = L+ η + L-, we define a nonsingular Lie algebra homomorphism φ : L+ → C and the universal Whittaker L-module We of t...