## Universal coverings of Lie tori (A finite presentation)

Azam, Saeid
Yamane, Hiroyuki
##### Description
Using the well-known recognition and structural theorem(s) for root-graded Lie algebras and their universal coverings, we give a finite presentation for the universal covering algebra of a centerless Lie torus of type $X\not=A,C,BC$. We follow a unified approach for the types under consideration.
##### Keywords
Mathematics - Quantum Algebra, 17B67, 17B65, 17B35, 17B70