Complexity of Puiseux solutions of differential and q -difference equations of order and degree one

We relate the complexity of both differential and q-difference equations of order one and degree one and their solutions. Our point of view is to show that if the solutions are complicated, the initial equation is complicated too. In this spirit, we bound from below an invariant of the differential...

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Detalles Bibliográficos
Autores: Cano Torres, José María|||0000-0001-6979-1697, Fortuny Ayuso, Pedro|||0000-0002-4590-130X, Ribón, Javier|||0000-0001-7072-2883
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:295009
Acceso en línea:https://ddd.uab.cat/record/295009
Access Level:acceso abierto
Palabra clave:Power series solution
Holomorphic foliation
Q-difference equation
Newton-Puiseux polygon
Descripción
Sumario:We relate the complexity of both differential and q-difference equations of order one and degree one and their solutions. Our point of view is to show that if the solutions are complicated, the initial equation is complicated too. In this spirit, we bound from below an invariant of the differential or q-difference equation, the height of its Newton polygon, in terms of the characteristic factors of a solution. The differential and the q-difference cases are treated in a unified way.