English
limNthHom f_compat r is the limit (in p-adics) of the sequence nthHom f r, giving a ring hom from ℤ_p to R.
Русский
limNthHom f_compat r является пределом последовательности nthHom f r в p-адиковой норме, образуя кольцевой гомоморфизъм ℤ_p → R.
LaTeX
$$limNthHom f_compat r : ℤ_p is a ring hom$$
Lean4
/-- `limNthHom f_compat r` is the limit of a sequence `f` of compatible ring homs `R →+* ZMod (p^k)`.
This is itself a ring hom: see `PadicInt.lift`.
-/
def limNthHom (r : R) : ℤ_[p] :=
ofIntSeq (nthHom f r) (isCauSeq_nthHom f_compat r)