John R. Graef

According to our database, John R. Graef authored at least 25 papers between 2006 and 2024.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2024

A Comprehensive Study of the Langevin Boundary Value Problems with Variable Order Fractional Derivatives.

John R. Graef, Kadda Maazouz, Moussa Daif Allah Zaak

Axioms, April, 2024

2023

Existence of Multiple Weak Solutions to a Discrete Fractional Boundary Value Problem.

Shahin Moradi, Ghasem Alizadeh Afrouzi, John R. Graef

Axioms, October, 2023

2021

Razumikhin qualitative analyses of Volterra integro-fractional delay differential equation with caputo derivatives.

John R. Graef, Cemil Tunç, Hamdullah Sevli

Commun. Nonlinear Sci. Numer. Simul., 2021

Oscillation of higher order functional differential equations with an advanced argument.

John R. Graef

Appl. Math. Lett., 2021

2020

Oscillatory Behavior of Higher order nonlinear difference equations.

Said R. Grace, John R. Graef

Math. Model. Anal., 2020

Stability analysis of a fractional online social network model.

John R. Graef, Lingju Kong, Andrew H. Ledoan, Min Wang

Math. Comput. Simul., 2020

2019

On the boundedness of nonoscillatory solutions of certain fractional differential equations with positive and negative terms.

Said R. Grace, John R. Graef, Ercan Tunç

Appl. Math. Lett., 2019

2018

Oscillatory Behavior of second order nonlinear differential equations with a Sublinear neutral Term.

Said R. Grace, John R. Graef

Math. Model. Anal., 2018

On the asymptotic behavior of solutions of certain forced third order integro-differential equations with δ-Laplacian.

Said R. Grace, John R. Graef

Appl. Math. Lett., 2018

2016

Positive solutions for a fractional boundary value problem.

John R. Graef, Lingju Kong, Bo Yang

Appl. Math. Lett., 2016

2014

A Chebyshev spectral method for solving Riemann-Liouville fractional boundary value problems.

John R. Graef, Lingju Kong, Min Wang

Appl. Math. Comput., 2014

2013

Oscillation of integro-dynamic equations on time scales.

Said R. Grace, John R. Graef, Agacik Zafer

Appl. Math. Lett., 2013

2012

On the oscillation of third order neutral delay dynamic equations on time scales.

Said R. Grace, John R. Graef, Mohamed A. El-Beltagy

Comput. Math. Appl., 2012

Positive solutions for a class of higher order boundary value problems with fractional q-derivatives.

John R. Graef, Lingju Kong

Appl. Math. Comput., 2012

2011

Existence of multiple periodic solutions for first order functional differential equations.

John R. Graef, Lingju Kong

Math. Comput. Model., 2011

Higher order boundary value problems with phi-Laplacian and functional boundary conditions.

John R. Graef, Lingju Kong, Feliz M. Minhós

Comput. Math. Appl., 2011

Periodic solutions of first order functional differential equations.

John R. Graef, Lingju Kong

Appl. Math. Lett., 2011

2010

Dynamics of a fishing model.

John R. Graef, Seshadev Padhi, Shilpee Srivastava

Neural Parallel Sci. Comput., 2010

Higher order semipositone multi-point boundary value problems on time scales.

Abdülkadir Dogan, John R. Graef, Lingju Kong

Comput. Math. Appl., 2010

2009

A class of nth-order BVPs with nonlocal conditions.

John R. Graef, Toufik Moussaoui

Comput. Math. Appl., 2009

Positive solutions for third order semipositone boundary value problems.

John R. Graef, Lingju Kong

Appl. Math. Lett., 2009

2008

Existence results for functional semilinear differential inclusions in Fréchet spaces.

John R. Graef, Abdelghani Ouahab

Math. Comput. Model., 2008

A periodic boundary value problem with vanishing Green's function.

John R. Graef, Lingju Kong, Haiyan Wang

Appl. Math. Lett., 2008

Extremal solutions for nonresonance impulsive functional dynamic equations on time scales.

John R. Graef, Abdelghani Ouahab

Appl. Math. Comput., 2008

2006

Some existence and uniqueness results for first-order boundary value problems for impulsive functional differential equations with infinite delay in Fréchet spaces.

John R. Graef, Abdelghani Ouahab

Int. J. Math. Math. Sci., 2006