The quadric threefold dynamical-degree and periodic-point conjecture
Let F:C4→C4F:\mathbb{C}^4\rightarrow\mathbb{C}^4F:C4→C4 be the birational map … let ϕ(x1,x2,x3,x4)=x1x4−x2x3\phi(x_1,x_2,x_3,x_4)=x_1x_4-x_2x_3ϕ(x1,x2,x3,x4)=x1x4−x2x3, and for generic c∈Cc\in\mathbb{C}c∈C let Xc⊂P4X_c\subset\mathbb{P}^4Xc⊂P4 be the…