Bernstein operator method for approximate solution of singularly perturbed Volterra integral equations

USTA FUAT, AKYİĞİT MAHMUT, SAY FATİH, Ansari Khursheed J. , Place of Publication: Journal of Mathematical Analysis and Applications , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttp://dx.doi.org/10.1016/j.jmaa.2021.125828

On the asymptotic behavior of a second-order general differential equation

SAY FATİH , Place of Publication: Numerical Methods for Partial Differential Equations , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttp://dx.doi.org/10.1002/num.22774

Recurrence relationship of successive level singulants

SAY FATİH , Place of Publication: Mathematical Methods in the Applied Sciences , 2022

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttp://dx.doi.org/10.1002/mma.7896

Optimal successive complementary expansion for singular differential equations

SAY FATİH , Place of Publication: Mathematical Methods in the Applied Sciences , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttp://dx.doi.org/10.1002/mma.6228

Late-order terms of second order ODEs in terms of pre-factors

SAY FATİH , Place of Publication: Hacettepe Journal of Mathematics and Statistics , 2021

UluslararasıHakemliSCI-ExpandedÖzgün Makalehttp://dx.doi.org/10.1002/mma.6228

First-order general differential equation for multi-level asymptotics at higher levels and recurrence relationship of singulants

SAY FATİH , Place of Publication: COMPTES RENDUS MATHEMATIQUE , 2021

UluslararasıHakemliSCIÖzgün Makalehttp://dx.doi.org/10.5802/crmath.264

Asymptotics of singularly perturbed Volterra type integro-differential equation

SAY FATİH , Place of Publication: Konuralp Journal of Mathematics , 2020

UluslararasıHakemliMathSciNet, Zentralblatt fur MathematikÖzgün Makalehttps://dergipark.org.tr/en/pub/konuralpjournalmath/issue/31495/801153

High-order coefficients of second-order ODEs in relation to pre-factors for complex parameter

SAY FATİH , Place of Publication: Fundamental Journal of Mathematics and Applications , 2020

UlusalHakemliTR DİZİNÖzgün Makalehttp://dx.doi.org/10.33401/fujma.725913