Lifetime distributions and their approximation in reliability of serial/parallel networks, Alexei Leahu, Veronica Andrievschi-Bagrin (Received: 20.05.2019, Accepted: 24.09.2019)
A generalization of Kruskal-Katona's theorem, Luca Amata and Marilena Crupi (Received: 10.07.2019, Accepted: 24.09.2019)
Constacyclic codes over finite local Frobenius non-chain rings of length 5 and nilpotency index 4, C. A. Castillo-Guillen and C. Renteria-Marquez (Received: 11.10.2019, Major revisions: 19.10.2019 Accepted: 13.11.2019)
Langevin equation in terms of conformable differential operators, Bashir AHMAD, Ravi P. AGARWAL, Madeaha ALGHANMI and Ahmed ALSAEDI (Received: 03.10.2019, Accepted: 13.11.2019)
σ-Derivations on generalized matrix algebras, Aisha Jabeen, Mohammad Ashraf, and Musheer Ahmad (Received: 12.10.2019, Accepted: 12.12.2019)
On a free boundary value problem for the anisotropic N-Laplace operator on an N-dimensional ring domain, A. E. Nicolescu and S. Vlase (Received: 13.10.2019, Accepted: 15.12.2019)
On constraint manifolds of Lorentz sphere, Busra Aktas, Olgun Durmaz, and Halit Gundogan (Received: 18.09.2019, Accepted: 15.12.2019)
Fitzpatrick transform of monotone relations in non-at Hadamard spaces, A. Moslemipour, M. Roohi, M. R. Mardanbeigi and M. Azhini (Received: 14.09.2019, Accepted: 22.11.2019)
On some mean value theorem via covering argument, Dariusz Sokolowski (Received: 03.09.2019, Major revisions: 09.10.2019 Accepted: 16.12.2019)
Congruences of Sheffer stroke basic algebras, Ibrahim Senturk, Tahsin Oner and Arsham Borumand Saeid (Received: 26.09.2019, Accepted: 06.12.2019)
Congruences of Sheffer stroke basic algebras, Ibrahim Senturk, Tahsin Oner and Arsham Borumand Saeid (Received: 26.09.2019, Accepted: 06.12.2019)
Iterative solution of Weighted Linear Least Squares Problems, Doina Carp, Constantin Popa, Tobias Preclik and Ulrich Rude (Received: 10.07.2019, Accepted: 16.12.2019)
The variation of the salt concentration at the discharge of a river into a saline water, Gheorghe Juncu, Aurelian Nicola, Elena Stroila (Curca) (Received: 10.07.2019, Accepted: 16.12.2019)
Constructive Approach of the Solution of Riemann Problem for Shallow Water Equations with Topography and Vegetation, Stelian Ion, Stefan-Gicu Cruceanu, Dorin Marinescu (Received: 10.07.2019, Accepted: 16.12.2019)
A note on adaptivity in factorized approximate inverse preconditioning, Jiri Kopal, Miroslav Rozloznik, and Miroslav Tuma (Received: 10.07.2019, Accepted: 16.12.2019)
On S-2-absorbing submodules and vn-regular modules, Gulsen Ulucak, Unsal Tekir and Suat Koc (Received: 31.08.2019, Revision: 25.09.2019, Accepted: 17.12.2019)