2 problems

Let $P$ and $Q$ be a pair of planes, and let the characterizing angles of the pair be defined as in the preceding classification discussion. Morgan's mod-3 conjecture. The pair is…

Let $P$ and $Q$ be oriented planes. Morgan's mod-2 conjecture. The pair $(P,Q)$ is $\mathbb{Z}/2\mathbb{Z}$-area-minimizing if and only if it is $\mathbb{Z}$-area-minimizing with a…