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[Merged by Bors] - feat(analysis/convex/proj_Icc): Extending convex functions #18797
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bors d+ Looks good. Please merge whenever you think you'll be able to do the forward port promptly! |
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Constantly extending monotone/antitone functions preserves their convexity.
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Forward-ports leanprover-community/mathlib3#18797 The changes to `Mathlib.Data.Set.Intervals.Basic` were independently added to mathlib4 in `Mathlib.Data.Set.Intervals.Image`, so the `#align`s have been added there instead of the original file. Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Forward-ports leanprover-community/mathlib3#18797 The changes to `Mathlib.Data.Set.Intervals.Basic` were independently added to mathlib4 in `Mathlib.Data.Set.Intervals.Image`, so the `#align`s have been added there instead of the original file. Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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Forward-ports leanprover-community/mathlib3#18797 The changes to `Mathlib.Data.Set.Intervals.Basic` were independently added to mathlib4 in `Mathlib.Data.Set.Intervals.Image`, so the `#align`s have been added there instead of the original file. Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
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* commit '65a1391a0106c9204fe45bc73a039f056558cb83': (12443 commits)
feat(data/{list,multiset,finset}/*): `attach` and `filter` lemmas (leanprover-community#18087)
feat(combinatorics/simple_graph): More clique lemmas (leanprover-community#19203)
feat(measure_theory/order/upper_lower): Order-connected sets in `ℝⁿ` are measurable (leanprover-community#16976)
move old README.md to OLD_README.md
doc: Add a warning mentioning Lean 4 to the readme (leanprover-community#19243)
feat(topology/metric_space): diameter of pointwise zero and addition (leanprover-community#19028)
feat(topology/algebra/order/liminf_limsup): Eventual boundedness of neighborhoods (leanprover-community#18629)
feat(probability/independence): Independence of singletons (leanprover-community#18506)
feat(combinatorics/set_family/ahlswede_zhang): Ahlswede-Zhang identity, part I (leanprover-community#18612)
feat(data/finset/lattice): `sup'`/`inf'` lemmas (leanprover-community#18989)
chore(order/liminf_limsup): Generalise and move lemmas (leanprover-community#18628)
feat(algebraic_topology/dold_kan): The Dold-Kan equivalence for abelian categories (leanprover-community#17926)
feat(data/sum/interval): The lexicographic sum of two locally finite orders is locally finite (leanprover-community#11352)
feat(analysis/convex/proj_Icc): Extending convex functions (leanprover-community#18797)
feat(algebraic_topology/dold_kan): The Dold-Kan equivalence for pseudoabelian categories (leanprover-community#17925)
feat(measure_theory/measure/haar_quotient): the Unfolding Trick (leanprover-community#18863)
feat(linear_algebra/orientation): add `orientation.reindex` (leanprover-community#19236)
feat(combinatorics/quiver/covering): Definition of coverings and unique lifting of paths (leanprover-community#17828)
feat(set_theory/game/pgame): small sets of pre-games / games / surreals are bounded (leanprover-community#15260)
feat(tactic/positivity): Extension for `ite` (leanprover-community#17650)
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# Conflicts:
# README.md
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Constantly extending monotone/antitone functions preserves their convexity.
Ici a#18795Requested by @b-mehta