4 problems

Let a separating cut be a cut in a matchable graph whose contraction produces a graph, and let $\operatorname{pf}(G)$ denote the pfaffian number of a graph $G$. Separating-cut pres…

Let $G$ be a matchable graph. Let $H'$ be a non-spanning conformal subgraph of $G$ and let $H”:= G - V(H')$. Strict conformal-subgraph lower-bound conjecture. If $H'$ and $H”$ are…

Solid Pfaffian conjecture.

Norine–Thomas conjecture. Every Pfaffian cubic graph is 3-edge colorable.