Mathlib v3 is deprecated. Go to Mathlib v4

Commit 2019-12-28 13:01 e43905be

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refactor(topology/algebra/ordered): formulate a few "Icc induction" principles (#1833)

  • refactor(topology/algebra/ordered): use tfae, prove equality of some nhds_within
  • Add missing order_dual.* instances
  • Try to fix the build
  • Fix formatting, rename some variables
  • refactor(topology/algebra/ordered): formulate a few "Icc induction" principles They have other applications than proving is_connected_Icc.
  • Fix doc Co-Authored-By: sgouezel sebastien.gouezel@univ-rennes1.fr
  • Rephraze docs
  • Drop an unused argument

Estimated changes