4th International Conference on Mathematical Advances and Applications, İstanbul, Türkiye, 26 - 29 Mayıs 2021, cilt.1, ss.94
In this work, we consider some systems of exponentials and trigonometric functions in weighted grand-Lebesgue spaces. Due to the non-separability of weighted grand-Lebesgue spaces with a general weight, we introduce the subspace G_p),\rho (0,1) \oplus C, 1<p<+\infty, generated by the shift operator of the weighted grand-Lebesgue space L_p),\rho (0,1) \oplus C with weight function satisfying the Muckenhoupt condition. The basis property of systems in G_p),\rho (0,1), 1<p<+\infty, are studied.