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math.QA2009
Exposition on affine and elliptic root systems and elliptic Lie algebras
Saeid Azam, Hiroyuki Yamane, Malihe Yousofzadeh
This is an exposition in order to give an explicit way to understand (1) a non-topological proof for an existence of a base of an affine root system, (2) a Serre-type definition of…
math.QA2009★ 1 cited
Universal coverings of Lie tori (A finite presentation)
Saeid Azam, Hiroyuki Yamane, Malihe Yousofzadeh
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 alge…