Reiteration Theorem for $\mathcal{R}$ and $\mathcal{L}$-spaces with the same parameter

Leo R. Ya. Doktorski, Pedro Fernández-Martínez, Teresa M. Signes

Let $E,F,E_0,E_1$ be rearrangement invariant spaces; let $a,\mathrm{b},{\mathrm{b}}_0,{\mathrm{b}}_1$ be slowly varying functions and $0<{\theta }_0,{\theta }_1<1$. We characterize the interpol…