A three-block higher-rank deformed Hermitian--Yang--Mills correspondence on ${\mathbb{P}}^1\times {\mathbb{P}}^1$

Yuqi Li, Hao-Yu Sun

We study the invariant rank-four deformed Hermitian--Yang--Mills equation associated with the chain $\mathcal{O}(1)\to \mathcal{O}(2{)}^{\oplus 2}\to \mathcal{O}(3)$ over ${\mathbb{P}}^1$,…