History of tag 005E
Go back to the tag's page.
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changed the proof
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2011-08-13 |
4ea0b65 |
Whitespace changes
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changed the proof
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2010-02-25 |
ce16e66 |
Topology: Improvements
Pointed out by Nava Chitrik
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changed the statement and the proof
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2009-10-22 |
69a7f5d |
Topology: Fix error in lemma on existence closed point
This was noticed by Cameron Franc. Here is the email:
Dear project developers,
Lemma 9.5 in the chapter on topological spaces says that "every
nonempty quasi-compact topological space has a closed point".
This is false: consider the trivial topology on a nonempty
space.
One needs to assume some mild separation axiom, for instance
that for any two distinct points there is a closed set containing
precisely one of the two points.
The book is great! Keep up the good work,
-cameron franc
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assigned tag 005E
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2009-05-16 |
fad2e12
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Started tags infrastructure
new file: scripts/add_tags.py
modified: scripts/functions.py
new file: tags/initial_tags
new file: tags/tags
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created statement with label lemma-quasi-compact-closed-point in topology.tex
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2009-05-06 |
12e32e9 |
List of changes:
Improved exposition colimits modules in algebra.tex
Fixed typo on categories.tex
Proof basic lemma cohomology P^n_R, R Noetherian
Characterize affines by vanishing cohomology
Cohmology commutes with directed colimits sometimes
Typos constructions.tex
Clarify quasi-affine section
Ideals directed limit finite type ideals
Characterize affines in properties.tex
Closed points exist in quasi-compact spaces
modified: algebra.tex
modified: categories.tex
modified: coherent.tex
modified: cohomology.tex
modified: constructions.tex
modified: limits.tex
modified: modules.tex
modified: properties.tex
modified: topology.tex
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