1. Adaptive trust region scheme for multi-objective optimization problem using Geršgorin circle theorem

   • Nantu Kumar Bisui
   • Geetanjali Panda

   Original Research 02 August 2021 Pages: 2151 - 2172

   

2. The due date assignment scheduling problem with the deteriorating jobs and delivery time

   • Jin Qian
   • Haiyan Han

   Original Research 03 August 2021 Pages: 2173 - 2186

   

3. A study on some operations and products of neutrosophic hypersoft graphs

   • Muhammad Saeed
   • Atiqe Ur Rahman
   • Muhammad Arshad

   Original Research 03 August 2021 Pages: 2187 - 2214

   

4. Regularity and solution profiles along propagation for a cooperative species system with non-linear diffusion

   • José Luis Díaz Palencia

   Original Research 04 August 2021 Pages: 2215 - 2233

5. Predator–prey system with multiple delays: prey’s countermeasures against juvenile predators in the predator–prey conflict

   • Rajat Kaushik
   • Sandip Banerjee

   Original Research 09 August 2021 Pages: 2235 - 2265

   

6. New entanglement-assisted quantum MDS codes with length \(n=\frac{q^2+1}{10\mu }\)

   • Ruqin Gao
   • Ping Li
   • Xiaoshan Kai

   Original Research 10 August 2021 Pages: 2267 - 2291

7. Is the allee effect relevant to stochastic cancer model?

   • Mrinmoy Sardar
   • Subhas Khajanchi

   Original Research 13 August 2021 Pages: 2293 - 2315

   

8. Randic index of bipolar fuzzy graphs and its application in network systems

   • Soumitra Poulik
   • Sankar Das
   • Ganesh Ghorai

   Original Research 26 August 2021 Pages: 2317 - 2341

   

9. Efficient regularized Newton-type algorithm for solving convex optimization problem

   • Shazia Javed
   • Areeba Khan

   Original Research 28 August 2021 Pages: 2343 - 2363

   

10. Mathematical analysis of a delayed HIV infection model with saturated CTL immune response and immune impairment

    • Yan Yang
    • Rui Xu

    Original Research 04 September 2021 Pages: 2365 - 2380

    

11. Few-weight \({\pmb {{\mathbb {Z}}}}_p\pmb {{\mathbb {Z}}}_p[u]\)-additive codes from down-sets

    • Shukai Wang
    • Minjia Shi

    Original Research 08 September 2021 Pages: 2381 - 2388

12. Some results for a class of two-dimensional fractional hyperbolic differential systems with time delay

    • Hassen Arfaoui
    • Abdellatif Ben Makhlouf

    Original Research 08 September 2021 Pages: 2389 - 2405

    

13. A three-term conjugate gradient method with accelerated subspace quadratic optimization

    • Jinbao Jian
    • Wenrui Chen
    • Pengjie Liu

    Original Research 09 September 2021 Pages: 2407 - 2433

    

14. A new Tau-collocation method with fractional basis for solving weakly singular delay Volterra integro-differential equations

    • G. Azizipour
    • S. Shahmorad

    Original Research 09 September 2021 Pages: 2435 - 2469

    

15. ADI Galerkin finite element scheme for the two-dimensional semilinear partial intergro-differential equation with a weakly singular kernel

    • Biao Yang
    • Haixiang Zhang
    • Liang Tang

    Original Research 10 September 2021 Pages: 2471 - 2491

16. A family of constacyclic codes over a class of non-chain rings \({\mathcal {A}}_{q,r}\) and new quantum codes

    • Habibul Islam
    • Shikha Patel
    • Patrick Solé

    Original Research 12 September 2021 Pages: 2493 - 2514

17. Sufficient conditions for the existence of oscillatory solutions to nonlinear second order differential equations

    • Abhay Kumar Sethi
    • Mehran Ghaderi
    • Hashem Parvaneh Masiha

    Original Research 15 September 2021 Pages: 2515 - 2532

    

18. Dynamic analysis of a SIQR epidemic model considering the interaction of environmental differences

    • Mingjian Wang
    • Yuhan Hu
    • Libing Wu

    Original Research 15 September 2021 Pages: 2533 - 2549

    

19. Periodicity and stationary distribution of two novel stochastic epidemic models with infectivity in the latent period and household quarantine

    • Dongchen Shangguan
    • Zhijun Liu
    • Ronghua Tan

    Original Research 15 September 2021 Pages: 2551 - 2570

    

20. Positive solutions for fractional (p, q)-difference boundary value problems

    • Zhongyun Qin
    • Shurong Sun

    Original Research 17 September 2021 Pages: 2571 - 2588

21. Modeling effects of impulsive control strategies on the spread of mosquito borne disease: role of latent period

    • Omprakash Singh Sisodiya
    • O. P. Misra
    • Joydip Dhar

    Original Research 18 September 2021 Pages: 2589 - 2615

    

22. An efficient uniformly convergent numerical scheme for singularly perturbed semilinear parabolic problems with large delay in time

    • S. Priyadarshana
    • J. Mohapatra
    • L. Govindrao

    Original Research 22 September 2021 Pages: 2617 - 2639

    

23. Modeling and dynamic analysis of novel coronavirus pneumonia (COVID-19) in China

    • Youming Guo
    • Tingting Li

    Original Research 23 September 2021 Pages: 2641 - 2666

    

24. A new cryptosystem based on a twisted Hessian curve \(H^{4}_{a,d}\)

    • Abdelâli Grini
    • Abdelhakim Chillali
    • Hakima Mouanis

    Original Research 29 September 2021 Pages: 2667 - 2683

25. Global stability of a diffusive HCV infections epidemic model with nonlinear incidence

    • Ruyan Su
    • Wensheng Yang

    Original Research 29 September 2021 Pages: 2685 - 2697

    

26. The Drazin inverse of anti-triangular block matrices

    • Daochang Zhang
    • Yu Jin
    • Dijana Mosić

    Original Research 30 September 2021 Pages: 2699 - 2716

27. Combined gradient methods for multiobjective optimization

    • Peng Wang
    • Detong Zhu

    Original Research 01 October 2021 Pages: 2717 - 2741

    

28. Fractional integro-differential sliding mode control of a class of distributed-order nonlinear systems

    • Aldo Jonathan Muñoz-Vázquez
    • Guillermo Fernández-Anaya
    • Juan Diego Sánchez-Torres

    Original Research 06 October 2021 Pages: 2743 - 2760

    

29. A stochastic turbidostat model coupled with distributed delay and degenerate diffusion: dynamics analysis

    • Xiaojie Mu
    • Daqing Jiang
    • Bashir Ahmad

    Original Research 07 October 2021 Pages: 2761 - 2786

    

30. An adaptation of the modified decomposition method in solving nonlinear initial-boundary value problems for ODEs

    • Lazhar Bougoffa
    • Randolph C. Rach

    Original Research 09 October 2021 Pages: 2787 - 2802

31. Weak and strong convergence results for solving inclusion problems and its applications

    • Jun Yang
    • Huali Zhao
    • Min An

    Original Research 10 October 2021 Pages: 2803 - 2822

32. Effective numerical technique for solving variable order integro-differential equations

    • Taha M. El-Gindy
    • Hoda F. Ahmed
    • Marina B. Melad

    Original Research 13 October 2021 Pages: 2823 - 2855

    

33. A new family of expanded mixed finite element methods for reaction–diffusion equations

    • Bingjie Ji
    • Jiansong Zhang
    • Hui Guo

    Original Research 18 October 2021 Pages: 2857 - 2875