Proposition 1. Let (A1, θ1) and (A2, θ2) be abelian varieties of prim- itive CM type (K, Φ). If an isogeny λ from (A1, θ1) onto (A2, θ2) is an a- multiplication, then λ∗ from (A∗1, θ1∗) onto (A∗2, θ2∗) is an a-multiplication.
Appears in 2 contracts
Sources: Not Applicable, Not Applicable