Spectral theory of periodic difference triangular operators. Landau Days 2014.
Channel: Taras Mogilyuk
Date: 08/07/2014

Spectral theory of periodic difference triangular operators.
25 June, Landau Days 2014.
Krichever Igor M. 
Recently difference equations of the form $$V_i+a_i^1V_{i+1}+\cdots +a_i^kV_{i+k}+V_{i+k+1}=0$$ with $n$-periodic coefficients have attracted additional interest and become central for various problems in the theory of integrable systems, the theory of cluster algebras, the theory of friezed patterns.