A dessin on the base: a description of mutually non-local 7-branes without using branch cuts

Shin Fukuchi, Naoto Kan, Shun'ya Mizoguchi +1

We consider the special roles of the zero loci of the Weierstrass invariants $g_2(\tau (z))$, $g_3(\tau (z))$ in F-theory on an elliptic fibration over $P^1$ or a further fibration thereof…