## Proceedings of the International Conference on Geometry, Integrability and Quantization

### Recursion Operators and Reductions of Integrable Equations on Symmetric Spaces

#### Abstract

We study certain classes of integrable nonlinear differential equations related to the type symmetric spaces. Our main examples concern equations related to A.III-type symmetric spaces. We use the Cartan involution corresponding to this symmetric space as an element of the reduction group and restrict generic Lax operators to this symmetric space. Next we outline the spectral theory of the reduced Lax operator $L$ and construct its fundamental analytic solutions. Analyzing the Wronskian relations we introduce the `squared solutions' of $L$ and derive the recursion operators by three different methods.

#### Article information

Dates
First available in Project Euclid: 13 July 2015

https://projecteuclid.org/ euclid.pgiq/1436815614

Digital Object Identifier
doi:10.7546/giq-12-2011-11-42

Mathematical Reviews number (MathSciNet)
MR

Zentralblatt MATH identifier
1382.37075

#### Citation

Gerdjikov, Vladimir; Mikhailov, Alexander; Valchev, Tihomir. Recursion Operators and Reductions of Integrable Equations on Symmetric Spaces. Proceedings of the Twelfth International Conference on Geometry, Integrability and Quantization, 11--42, Avangard Prima, Sofia, Bulgaria, 2011. doi:10.7546/giq-12-2011-11-42. https://projecteuclid.org/euclid.pgiq/1436815614