2 problems

Let $\mathcal{J}^{1}$ denote the class of smooth Jordan curves, and let $\mathcal{Q}$ denote the specified circular quadrilateral. Makeev's conjecture. The class $\mathcal{J}^{1}$…

Let $\mathcal{J}^{1}_{\textnormal{pw}}$ be the class of piecewise $C^1$ Jordan curves without cusps, and let $\mathcal{J}^{0}$ be the class of continuous Jordan curves. Let…