Year: 2026
Type: article
Abstract: We study the existence of multiple solutions of the quasilinear equation (ψ(u'(t)))'= f(t,u(t),u'(t)), t∈[0,T] submitted to periodic boundary conditions, where ψ:]-a,a[→R, with 0<a < +∞, is an increasing homeomorphism such that ψ(0)=0. Combining some sign conditions and lower and upper solutions method, we obtain existence of two or Three solutions.
Language: English
Subfield: Applied Mathematics
Field: Mathematics
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7124699690