no goals
p : ℕ
hp_prime : Fact (Nat.Prime p)
r : ℚ
n : ℕ
x : ℤ_[p]
a b : ℕ
ha : x - ↑a ∈ Ideal.span {↑p ^ n}
hb : x - ↑b ∈ Ideal.span {↑p ^ n}
⊢ ↑a = ↑b
simpa using zmod_congr_of_sub_mem_span_aux n x a b ha hb