A note on double sequences of fuzzy numbers
Extensions of Caristi-Kirk's theorem
Absolutely representing systems and convolution operators in the complex domain
The group structure of Hecke groups H $(lambda_q)$
$T_2$-objects in categories of filter and local filter convergence spaces
On comformally flat Lorentzian spaces satisfying a certain condition on the curvature tensor
($sigma$, $tau$)-Lie ideals in prime rings with derivation
Normal boundary value problems for differential equations of higher order