Notes on two-parameter quantum groups, (I)
classification
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givengroupspositivequantumtwo-parameteralgebrasassociatedclass
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A simpler definition for a class of two-parameter quantum groups associated to semisimple Lie algebras is given in terms of Euler form. Their positive parts turn out to be 2-cocycle deformations of each other under some conditions. An operator realization of the positive part is given.
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