Zulip Chat Archive
Stream: lean4
Topic: Problem by rounding
Leni Greco (Nov 03 2023 at 10:04):
hello!
I have problems working with ↑q . What do I have to change, so that I don't get errors?
import LeanCourse.Common
import LeanCourse.MIL.C03_Logic.solutions.Solutions_S06_Sequences_and_Convergence
set_option linter.unusedVariables false
open Nat Real Function Set
lemma : SequentialLimit (fun n ↦ 1 / (n+1)) 0 := by
intros a b
have ha: a>0 := by assumption
use (⌈1/a⌉₊ : ℕ)
simp
intro q w
have h1: |(↑q + 1)⁻¹|=(↑q + 1)⁻¹:= by exact sorry
sorry
Eric Wieser (Nov 03 2023 at 10:12):
Unfortunately this isn't a #mwe because it uses LeanCourse
, which most of us don't have because we're not on your course!
Damiano Testa (Nov 03 2023 at 10:14):
Taking into account what Eric said, you could see if using a type ascription similar to the one you used in the use
line and removing the ↑ helps... : smile
Last updated: Dec 20 2023 at 11:08 UTC