12 citations · 17 across the 3 of their papers we have counts for
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math.AG2010★ 12 cited
Non-commutative Laurent phenomenon for two variables
Alexandr Usnich
We prove the non-commutative Laurent phenomenon for two variables.
math.AG2007
The action of the Cremona group on the non-commutative ring
Alexandr Usnich
The Cremona group acts on the field of two independent commutative variables over complex numbers. We provide a non-commutative ring that is an analog of non-commutative field of t…
math.AG2006★ 5 cited
Symplectic automorphisms of CP^2 and the Thompson group T
Alexandr Usnich
We explain how to construct a morphism from the group of birational automorphisms of CP^2 preserving the logarithmic Poisson bracket to the Thompson group T. Than we give a linear…