3 problems

Natural-world existence conjecture. In the natural world, both the surface à godets and the pseudosphere have equal rights to exist.

Let $b1 in [-\infty,1]$, and let $A_1,A_2,\dots,A_6$ be six distinct points in the plane, with no three collinear. An $\alpha$-embedding is an embedding satisfying the $\alpha$-dep…

Embedding-reduction conjecture. The embedding problem for hypo $SU(2)$-structures and $SU(3)$-structures might be reduced to the embedding problem for $G_{2}$-structures.