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Forbidden sets of planar rational systems of difference equations with common denominator

Ignacio Bajo
2014 Applicable Analysis and Discrete Mathematics  
The forbidden sets of systems of first order rational difference equations in the plane in which the denominators are common for all the components of the system is studied. Such forbidden sets are composed of lines which, depending of some spectral properties of an associated matrix, can either be a finite number or lines or an infinity of lines converging to either an invariant line or to a finite number of lines itersecting in a fixed point or else it can be dense in a large subset of R 2 .
doi:10.2298/aadm131108022b fatcat:ocxrlkx7grgtzb27265554dyky