Let $E$ be elliptic curve and $φ$ be isogeny from $E$ to $E$. $φ$ induces $Z_p$-linear map $φ_p$.
Why $End(E)→End(T_p(E))$ ,$φ→φ_p$ is a ring hom?
2026-04-12 03:52:02.1775965922
Why $End(E)→End(T_p(E)) $ is a ring hom?
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