- TOME 64 (112), No. 4, 2021
- Olivia Yaoxiang Mei, Fanghou Qing,
Fan Yan, Zhang Yan: Some new relations between sums
of squares and triangular
numbers, 305-315
- Shabnam Malik:
Hamiltonicity in directed Toeplitz graphs
, 317-327
- Amir Ghasem Ghazanfari, Somayeh Malekinejad: Heron means and Pólya inequality for sector matrices, 329-339
- Mariam Manjikashvili, Sulkhan Mukhigulashvili:
Necessary and sufficient conditions of disconjugacy for the
fourth order linear ordinary differential equations, 341-353
- Mariana Chivu Cojocaru, Andaluzia Matei:
Saddle point formulations for a class
of nonlinear boundary value problems, 355-368
- Aicha
Nemsi, Abdelfeteh Fareh: General decay of the solution of a
one dimensional double porous elastic system with memory, 369-390
- Navid Nemati, Mohammad Reza Pournaki, Siamak
Yassemi: Componentwise linearity and the gcd condition are
preserved by the polarization, 391-399
- Marilena Jianu, Sever Angel Popescu: On a problem related to Egyptian fractions, 401-411
