Upper-solution or lower-solution method for Langevin equations with n fractional orders
نویسندگان
چکیده
In this paper, we study a nonlinear Langevin equation involving n-parameter singular fractional orders ?i(i=1,2), and ? with initial conditions. By means of an interesting fixed point theorem, establish sufficient conditions for the existence uniqueness solutions equations.
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ژورنال
عنوان ژورنال: Filomat
سال: 2021
ISSN: ['2406-0933', '0354-5180']
DOI: https://doi.org/10.2298/fil2114743h