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Feat: projective line over ℝ is homeomorphic to the one-point compactification of ℝ #18306

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Feat: projective line over ℝ is homeomorphic to the one-point compactification of ℝ #18306

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086bfa9
Add countability of computable functions
bjoernkjoshanssen Sep 19, 2024
594a3d4
Restoring original mathlib
bjoernkjoshanssen Sep 19, 2024
12078ac
First working version of homeomorphism
bjoernkjoshanssen Oct 27, 2024
c2ab38d
Docstrings
bjoernkjoshanssen Oct 27, 2024
8cc3305
Linting
bjoernkjoshanssen Oct 27, 2024
d82f537
nonterminal simp
bjoernkjoshanssen Oct 27, 2024
ec7ee65
running lake exe mk_all
bjoernkjoshanssen Oct 27, 2024
08baab7
docstrings added, unnecessary have blocks removed
bjoernkjoshanssen Oct 27, 2024
af4ef90
docstring added
bjoernkjoshanssen Oct 27, 2024
9df50fd
shake imports
bjoernkjoshanssen Oct 27, 2024
66da08f
Remove OnePointSlope, use OnePointEquiv instead
bjoernkjoshanssen Oct 28, 2024
df461a5
update mathlib.lean accordingly
bjoernkjoshanssen Oct 28, 2024
2bf65f3
nonterminal simps and such
bjoernkjoshanssen Oct 28, 2024
8d7016c
remove a simp
bjoernkjoshanssen Oct 28, 2024
c079248
reducing size and generalize to Fin n in places
bjoernkjoshanssen Oct 29, 2024
9c89f34
simps
bjoernkjoshanssen Oct 29, 2024
6d9a2d0
indent
bjoernkjoshanssen Oct 29, 2024
54e92c6
flipPos description
bjoernkjoshanssen Oct 29, 2024
7aaece1
To get 18411, merging master
bjoernkjoshanssen Oct 30, 2024
7b778a4
Making use of equivOfIsEmbeddingOfRangeEq
bjoernkjoshanssen Oct 31, 2024
d5c1b08
fix nonterminal simps
bjoernkjoshanssen Oct 31, 2024
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2 changes: 2 additions & 0 deletions Mathlib.lean
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Expand Up @@ -4772,6 +4772,8 @@ import Mathlib.Topology.ClopenBox
import Mathlib.Topology.CompactOpen
import Mathlib.Topology.Compactification.OnePoint
import Mathlib.Topology.Compactification.OnePointEquiv
import Mathlib.Topology.Compactification.OnePointHomeomorph
import Mathlib.Topology.Compactification.OnePointRealLemmas
import Mathlib.Topology.Compactness.Compact
import Mathlib.Topology.Compactness.CompactlyGeneratedSpace
import Mathlib.Topology.Compactness.Exterior
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