2 problems

Let $(M,\varphi)$ be a $G_2$-manifold and let $P\to M$ be a principal bundle with compact semisimple structure group. A $G_2$-instanton is a connection $A$ on $P$ satisfying … An a…

Donald's conjecture. $A$ is equivalent, modulo the action of ${\mathrm{Spin}}(7)$ and ${\mathscr G}_E$, to the pullback of a HermitianYangMills connection on…