Prof. Dr. FATMA FEN

Mediterranean Journal of Mathematics , cilt.22, sa.6, 2025 (SCI-Expanded, Scopus)

2. Asymptotically unpredictable trajectories in semiflows

Communications in Nonlinear Science and Numerical Simulation , cilt.134, 2024 (SCI-Expanded, Scopus)

3. Generation of Synchronous Unpredictable Oscillations by Coupled Hopfield Neural Networks

Journal of Applied Nonlinear Dynamics , cilt.13, sa.3, ss.591-602, 2024 (ESCI, Scopus)

4. Unpredictability in Quasilinear Non-Autonomous Systems with Regular Moments of Impulses

Fen M. O., Tokmak Fen F.

Mediterranean Journal of Mathematics , cilt.20, sa.4, 2023 (SCI-Expanded, Scopus)

5. Modulo periodic Poisson stable solutions of dynamic equations on a time scale

COMMUNICATIONS FACULTY OF SCIENCES UNIVERSITY OF ANKARA-SERIES A1 MATHEMATICS AND STATISTICS , cilt.72, sa.4, ss.907-920, 2023 (ESCI, TRDizin)

6. A novel criterion for unpredictable motions

FEN F., Fen M. O., AKHMET M.

Filomat , cilt.37, sa.18, ss.6151-6160, 2023 (SCI-Expanded, Scopus)

7. Replication of Period-Doubling Route to Chaos in Coupled Systems with Delay

FILOMAT , cilt.36, sa.2, ss.599-613, 2022 (SCI-Expanded, Scopus)

8. Quasilinear systems with unpredictable relay perturbations

TURKISH JOURNAL OF MATHEMATICS , cilt.46, ss.1369-1383, 2022 (SCI-Expanded, Scopus, TRDizin)

9. Unpredictable oscillations of SICNNs with delay

NEUROCOMPUTING , cilt.464, ss.119-129, 2021 (SCI-Expanded, Scopus)

10. Homoclinical Structure of Retarded SICNNs with Rectangular Input Currents

NEURAL PROCESSING LETTERS , cilt.49, sa.2, ss.521-538, 2019 (SCI-Expanded, Scopus)

11. Replication of period-doubling route to chaos in impulsive systems

ELECTRONIC JOURNAL OF QUALITATIVE THEORY OF DIFFERENTIAL EQUATIONS , sa.58, ss.1-20, 2019 (SCI-Expanded, Scopus)

12. ON THE SOLUTIONS OF A MULTI-POINT BVP FOR FRACTIONAL DIFFERENTIAL EQUATIONS WITH IMPULSES

FEN F.

MISKOLC MATHEMATICAL NOTES , cilt.19, sa.2, ss.847-863, 2018 (SCI-Expanded)

13. Existence of positive solutions for fourth-order impulsive integral boundary value problems on time scales

MATHEMATICAL METHODS IN THE APPLIED SCIENCES , cilt.40, sa.16, ss.5727-5741, 2017 (SCI-Expanded, Scopus)

14. HOMOCLINIC AND HETEROCLINIC MOTIONS IN HYBRID SYSTEMS WITH IMPACTS

MATHEMATICA SLOVACA , cilt.67, sa.5, ss.1179-1188, 2017 (SCI-Expanded, Scopus)

15. SICNNs with Li-Yorke chaotic outputs on a time scale

NEUROCOMPUTING , cilt.237, ss.158-165, 2017 (SCI-Expanded, Scopus)

16. EXISTENCE OF POSITIVE SOLUTIONS FOR A NONLINEAR nTH-ORDER m-POINT p-LAPLACIAN IMPULSIVE BOUNDARY VALUE PROBLEM

MATHEMATICA SLOVACA , cilt.67, sa.2, ss.467-482, 2017 (SCI-Expanded, Scopus)

17. Positive Solutions of Boundary Value Problems for p-Laplacian Fractional Differential Equations

FEN F., Karaca I. Y., ÖZEN Ö.

FILOMAT , cilt.31, sa.5, ss.1265-1277, 2017 (SCI-Expanded, Scopus)

18. POSITIVE SOLUTIONS OF nTH-ORDER m-POINT BOUNDARY VALUE PROBLEMS

BULLETIN OF THE IRANIAN MATHEMATICAL SOCIETY , cilt.42, sa.6, ss.1429-1439, 2016 (SCI-Expanded, Scopus)

19. On Positive Solutions of Nonlinear Third-Order Impulsive Boundary Value Problems on Time Scales

MEDITERRANEAN JOURNAL OF MATHEMATICS , cilt.13, sa.6, ss.4447-4461, 2016 (SCI-Expanded, Scopus)

20. EXISTENCE OF POSITIVE SOLUTIONS FOR NONLINEAR THIRD-ORDER m-POINT IMPULSIVE BOUNDARY-VALUE PROBLEMS ON TIME SCALES

UKRAINIAN MATHEMATICAL JOURNAL , cilt.68, sa.3, ss.458-474, 2016 (SCI-Expanded, Scopus)

21. On the Solvability of a System of Multi-Point Second Order Boundary Value Problem

Cerdiki T. S., Karaca I. Y., Sinanoglu A., FEN F.

JOURNAL OF COMPUTATIONAL ANALYSIS AND APPLICATIONS , cilt.20, sa.4, ss.666-673, 2016 (SCI-Expanded, Scopus)

22. Existence of Positive Solutions for Nonlinear Second-Order Impulsive Boundary Value Problems on Time Scales

MEDITERRANEAN JOURNAL OF MATHEMATICS , cilt.13, sa.1, ss.191-204, 2016 (SCI-Expanded, Scopus)

23. EXISTENCE OF POSITIVE SOLUTIONS TO nTH ORDER p-LAPLACIAN BOUNDARY VALUE PROBLEMS WITH INTEGRAL BOUNDARY CONDITIONS

MISKOLC MATHEMATICAL NOTES , cilt.17, sa.1, ss.381-397, 2016 (SCI-Expanded, Scopus)

24. Positive solutions of nth-order impulsive differential equations with integral boundary conditions

ANALELE STIINTIFICE ALE UNIVERSITATII OVIDIUS CONSTANTA-SERIA MATEMATICA , cilt.24, sa.1, ss.243-261, 2016 (SCI-Expanded, Scopus)

25. Nonlinear Four-point Impulsive Fractional Differential Equations with p-Laplacian Operator

Fen F., Karaca İ.

Discontinuity, Nonlinearity, and Complexity , cilt.4, sa.4, ss.467-486, 2015 (Scopus)

26. On positive solutions of m-point boundary value problems for p-Laplacian impulsive dynamic equations on time scales

INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS , cilt.46, sa.5, ss.723-738, 2015 (SCI-Expanded, Scopus)

27. Positive solutions of nth-order m-point impulsive boundary value problems

GEORGIAN MATHEMATICAL JOURNAL , cilt.22, sa.3, ss.373-384, 2015 (SCI-Expanded, Scopus)

28. Positive Solutions of nth-Order Boundary Value Problems with Integral Boundary Conditions

MATHEMATICAL MODELLING AND ANALYSIS , cilt.20, sa.2, ss.188-204, 2015 (SCI-Expanded, Scopus)

29. Multiple Positive Solutions for Nonlinear Second-Order m-Point Impulsive Boundary Value Problems on Time Scales

FILOMAT , cilt.29, sa.4, ss.817-827, 2015 (SCI-Expanded, Scopus)

30. EIGENVALUES FOR ITERATIVE SYSTEMS OF DYNAMIC EQUATIONS WITH INTEGRAL BOUNDARY CONDITIONS

COMMUNICATIONS FACULTY OF SCIENCES UNIVERSITY OF ANKARA-SERIES A1 MATHEMATICS AND STATISTICS , cilt.64, sa.1, ss.87-97, 2015 (ESCI, TRDizin)

31. Existence of Positive Solutions for a Second Order Eigenvalue Boundary Value Problem with Impulse on Time Scales

Journal of Advanced Research in Applied Mathematics , cilt.6, sa.2, ss.32-49, 2014 (Hakemli Dergi)

32. Existence of positive solutions for boundary value problems of p-Laplacian difference equations

ADVANCES IN DIFFERENCE EQUATIONS , 2014 (SCI-Expanded, Scopus)

33. Existence of positive solutions for p-Laplacian impulsive boundary value problems on time scales

Tokmak F., Karaca I. Y.

JOURNAL OF INEQUALITIES AND APPLICATIONS , 2014 (SCI-Expanded, Scopus)

34. Existence of three symmetric positive solutions for a second-order multi-point boundary value problem on time scales

Sinanoglu A., Karaca I. Y., Tokmak F., Senlik T.

ADVANCES IN DIFFERENCE EQUATIONS , 2014 (SCI-Expanded, Scopus)

35. Eigenvalues for iterative systems of nonlinear m-point boundary value problems on time scales

BOUNDARY VALUE PROBLEMS , 2014 (SCI-Expanded, Scopus)

36. Multiple positive solutions of boundary value problems for p-laplacian impulsive dynamic equations on time scales

Karaca I. Y., Ozen O. B., Tokmak F.

Fixed Point Theory , cilt.15, sa.2, ss.475-486, 2014 (SCI-Expanded, Scopus)

37. Existence of Solutions for Nonlinear Impulsive Fractional Differential Equations with p-Laplacian Operator

MATHEMATICAL PROBLEMS IN ENGINEERING , cilt.2014, 2014 (SCI-Expanded, Scopus)

38. Positive Solutions of Boundary Value Problems for Second order p Laplacian Difference Equations

International Journal of Difference Equations , cilt.9, sa.2, ss.243-269, 2014 (Scopus)

39. Existence of positive solutions for nonlinear third-order m-point boundary value problems on time scales

Filomat , cilt.28, sa.5, ss.925-935, 2014 (SCI-Expanded, Scopus)

40. Existence of symmetric positive solutions for a multipoint boundary value problem with sign-changing nonlinearity on time scales

Tokmak F., Karaca I. Y.

Boundary Value Problems , cilt.2013, 2013 (SCI-Expanded, Scopus)

41. Existence of positive solutions for third-order boundary value problems with integral boundary conditions on time scales

Journal of Inequalities and Applications , cilt.2013, 2013 (SCI-Expanded, Scopus)

42. Positive solutions for second order multi point boundary value problems

Chaotic Modeling and Simulation , cilt.3, ss.463-471, 2013 (Hakemli Dergi)

43. Positive solutions of an impulsive second order boundary value problem on time scales

Dynamics Of Continuous Discrete And Impulsive Systems-Series A-Mathematical Analysis , cilt.20, sa.1, ss.695-708, 2013 (Scopus)

44. Existence of positive solutions for third-order m -point boundary value problems with sign-changing nonlinearity on time scales

Tokmak F., Karaca I. Y.

Abstract and Applied Analysis , cilt.2012, 2012 (SCI-Expanded, Scopus)

45. Existence of three positive solutions for M-point time scale boundary value problems on infinite intervals

Ilkay Y. K., Tokmak F.

Dynamic Systems and Applications , cilt.20, sa.2-3, ss.355-368, 2011 (SCI-Expanded, Scopus)

Hakemli Bilimsel Toplantılarda Yayımlanmış Bildiriler 30

1. Dynamic Equations with Modulo Periodic Poisson Stable Oscillations on Periodic Time Scales

Fen F., Fen M. O.

The Third International Conference on Applied Mathematics in Engineering (ICAME’24) , Balıkesir, Türkiye, 26 - 28 Haziran 2024, ss.54, (Özet Bildiri)

2. Generation of Discontinuous Unpredictable Motions by Quasi-linear Systems with Regular Moments of Impulses

The 3rd International Conference on Applied Mathematics in Engineering (ICAME’24), Balıkesir, Türkiye, 26 - 28 Haziran 2024, ss.211, (Özet Bildiri)

3. Unpredictability in Retarded Shunting Inhibitory Cellular Neural Networks

Fen F., Fen M. O.

IV International Conference on Mathematics and its Applications in Science and Engineering (ICMASE 2023), Madrid, İspanya, 12 - 14 Temmuz 2023, ss.77, (Özet Bildiri)

4. Zaman Skalası Üzerindeki Sınır Değer Problemlerinin Pozitif Çözümleri

14. Ankara Matematik Günleri, Ankara, Türkiye, 28 - 29 Haziran 2019, (Özet Bildiri)

5. Retarded SICNNs with Homoclinic and Heteroclinic Outputs

International Conference on Mathematical Studies and Applications 2018 (ICMSA 2018), 4 - 06 Ekim 2018, (Özet Bildiri)

6. Third Order Impulsive Boundary Value Problems on Time Scales with Positive Solutions

International Conference on Applied Mathematics in Engineering (ICAME18), Balıkesir, Türkiye, 27 - 29 Haziran 2018, (Özet Bildiri)

7. Period-doubling Route to Chaos in Systems with Impulsive Effects

International Conference on Applied Mathematics in Engineering (ICAME18), 27 - 29 Haziran 2018, (Özet Bildiri)

8. Eigenvalues for iterative systems of nonlinear boundary value problems

International Conference on Nonlinear Differential and Difference Equations: Recent Developments and Applications (ICNDDE 2014), Antalya, Türkiye, 27 - 30 Mayıs 2014, (Özet Bildiri)

9. Chaotic Dynamics of SICNNs on a Time Scale

International Workshop on Mathematical Methods in Engineering (MME2017), 27 - 29 Nisan 2017, (Özet Bildiri)

10. Positive Solutions for a Fourth-Order Multipoint Impulsive BVP with p-Laplacian on Time Scales

THE SEVENTH INTERNATIONAL CONFERENCE ON DYNAMIC SYSTEMS AND APPLICATIONS THE FIFTH INTERNATIONAL CONFERENCE ON NEURAL, PARALLEL, AND SCIENTIFIC COMPUTATIONS, Atlanta, Amerika Birleşik Devletleri, 27 - 30 Mayıs 2015, cilt.7, ss.83-89, (Tam Metin Bildiri)

11. Hücresel Sinir Ağları Modellerinde Homoklinik ve Heteroklinik Yörüngeler

FEN M. O., FEN F.

11. Ankara Matematik Günleri, Ankara, Türkiye, 26 - 27 Mayıs 2016, (Özet Bildiri)

12. Homoclinical Structure of Hybrid Systems with Impacts

FEN M. O., FEN F.

3rd International Conference on Recent Advances in Pure and Applied Mathematics, 19 - 23 Mayıs 2016, (Özet Bildiri)

13. Impulsive Boundary Value Problem for Nonlinear DifferentialEquations of Fractional Order 2 3

4th International Eurasian Conference on Mathematical Sciences and Applications (IECMSA-2015), Atina, Yunanistan, 31 Ağustos - 03 Eylül 2015, (Özet Bildiri)

14. On the Solutions of a Multi Point BVP for Impulsive Fractional Differential Equations

FEN F.

Carolina Dynamics Symposium 2015, Atlanta, Amerika Birleşik Devletleri, 24 - 26 Nisan 2015, (Özet Bildiri)

15. Nonlinear Second Order Impulsive Boundary Value Problems

2015 Georgia Scientific Computing Symposium, Atlanta, Amerika Birleşik Devletleri, 28 Şubat 2015, (Özet Bildiri)

16. Nonlinear four point impulsive fractional differential equations with p Laplacian operator

5th International Conference on Nonlinear Science and Complexity, Xi’xxan, Çin, 4 - 09 Ağustos 2014, (Özet Bildiri)

17. Existence Results for Nonlinear Impulsive Fractional Differential Equations with p Laplacian Operator

International Congress in Honour of Professor Ravi P. Agarwal, Bursa, Türkiye, 23 - 26 Haziran 2014, (Özet Bildiri)

18. Existence of Positive Solutions for Non Homogeneous BVPs of p Laplacian Difference Equations

International Congress in Honour of Professor Ravi P. Agarwal, Bursa, Türkiye, 23 - 26 Haziran 2014, (Özet Bildiri)

19. Existence of positive solutions for p Laplacian impulsive boundary value problems

International Conference on Nonlinear Differential and Difference Equations: Recent Developments and Applications (ICNDDE 2014), Antalya, Türkiye, 27 - 30 Mayıs 2014, (Özet Bildiri)

20. Positive Solutions of Boundary Value Problems for Second Order p Laplacian Difference Equations

The International Workshop on Progress in Difference Equations, İzmir, Türkiye, 21 - 24 Mayıs 2014, (Özet Bildiri)

21. Existence of positive solutions for nonlinear third order m point boundary value problems on time scales

The Algerian-Turkish International Days on Mathematics 2013, İstanbul, Türkiye, 12 - 14 Eylül 2013, (Özet Bildiri)

22. On the Solvability of a System of Multi Point Second Order Boundary Value Problem

Şenlik T., KARACA İ., Sinanoğlu A., FEN F.

2nd International Eurasian Conference on Mathematical Sciences and Applications (IECMSA-2013), Saraybosna, Bosna-Hersek, 26 - 29 Ağustos 2013, (Özet Bildiri)

23. The Existence of Symmetric Positive Solutions for a Nonlinear Multi Point Boundary Value Problem on Time Scales

FEN F., KARACA İ., Senlik T., Sinanoglu A.

2nd International Eurasian Conference on Mathematical Sciences and Applications, Saraybosna, Bosna-Hersek, 26 - 29 Ağustos 2013, (Özet Bildiri)

24. Existence of Three Symmetric Positive Solutions for a Second Order Multi Point Boundary Value Problem on Time Scales

Sinanoğlu A., KARACA İ., FEN F., Şenlik T.

2nd International Eurasian Conference on Mathematical Sciences and Applications (IECMSA-2013), Saraybosna, Bosna-Hersek, 26 - 29 Ağustos 2013, (Özet Bildiri)

25. Existence of Positive Solutions for Third Order Boundary Value Problems with Integral Boundary Conditions on Time Scales

Anatolian Communications in Nonlinear Analysis, Bolu, Türkiye, 3 - 06 Temmuz 2013, (Özet Bildiri)

26. Existence of Positive Solutions for p Laplacian Impulsive Boundary Value Problems on Time Scales

International Conference on Applied Analysis and Mathematical Modelling, İstanbul, Türkiye, 2 - 05 Haziran 2013, (Özet Bildiri)

27. Eigenvalues for Iterative Systems of Nonlinear m point Boundary Value Problems on Time Scales

International Conference on Applied Analysis and Mathematical Modelling, İstanbul, Türkiye, 2 - 05 Haziran 2013, (Özet Bildiri)

28. Positive Solutions For Second Order Impulsive Boundary Value Problems on Time Scales

The 11th International Workshop on Dynamical Systems and Applications, Ankara, Türkiye, 26 - 28 Haziran 2012, (Özet Bildiri)

29. Existence of Symmetric Positive Solutions for m point Boundary Value Problem with Sign Changing Nonlinearity on Time Scales

International Conference on Applied Analysis and Algebra 2012, İstanbul, Türkiye, 20 - 24 Haziran 2012, (Özet Bildiri)

30. Triple positive solutions of m point time scale BVPs with p Laplacian on infinite intervals

Sixth International Conference on Dynamic Systems and Applications, Atlanta, Amerika Birleşik Devletleri, 25 - 28 Mayıs 2011, cilt.6, ss.205-212, (Tam Metin Bildiri)

Kitaplar 1

1. Period-Doubling Route to Chaos and Intermittency in a Hybrid Rössler Model