On the summability of a class of formal power series

The formal power series solutions for some classes of moment differential equations, induced by polynomial moment differential operators, are characterized in terms of their summability properties, and in terms of estimates for recursive expressions involving their coefficients. Of special interest...

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Bibliographic Details
Authors: Lastra Sedano, Alberto|||0000-0002-4012-6471; Sanz, Javier; Sendra Pons, Juan Rafael|||0000-0003-2568-1159
Format: Article
Publication date:2022
Country:España
Institution:Universidad de Alcalá (UAH)
Repository:e_Buah Biblioteca Digital Universidad de Alcalá
Language:English
OAI Identifier:oai:ebuah.uah.es:10017/55236
Online Access:http://hdl.handle.net/10017/55236
https://dx.doi.org/10.7153/mia-2022-25-68
Access Level:Open access
Keyword:Gevrey asymptotic expansions
Formal power series
Summability
Moment differential equations
Proximate orders
q-Gevrey asymptotics
Matemáticas
Mathematics
Description
Summary:The formal power series solutions for some classes of moment differential equations, induced by polynomial moment differential operators, are characterized in terms of their summability properties, and in terms of estimates for recursive expressions involving their coefficients. Of special interest are the particularization of these results to classes of fractional and of ordinary differential equations. The Stokes’ phenomenon can be described in some of these situations. The main results are extended into the framework of q-Gevrey asymptotics and q-difference equations.