2 problems

Let $\mathcal{E}$ denote the class of Kalmár elementary functions, and let $\langle x+y,\operatorname{tdiv}(x,y),2^x\rangle$ denote the class of functions generated by substitution…

Let $X\subseteq\mathbb{C}$ be a connected open set and let $f:X\to\mathbb{C}$ be a meromorphic elementary function. A function is solvable when its equation with a constant right-h…