History of tag 0CXM
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changed the statement and the proof
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2021-04-10 |
8be4594 |
Finish Artin's theorem on contractions
Still a bit rough
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changed the statement
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2018-01-31 |
c2868d0 |
W ---> Z
Thanks to Tanya Kraushal Srivasta
https://stacks.math.columbia.edu/tag/0CXM#comment-2985
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assigned tag 0CXM
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2016-11-06 |
0a3bfd5
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Tags: Added new tags
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created statement with label lemma-base-change-versal in artin.tex
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2016-11-06 |
7a43b50 |
Strong formal effectiveness => openness versality
Actually not hard to prove and you only need to check on first order
thickenings.
Bhargav's example from c31011d shows that strong formal effectiveness
does not always hold. But what about strong formal effectiveness
where the thickenings are always first order (between any two, not
just between consecutive indices)? This is the only thing needed for
the argument here, so it would be nice if it was true for algebraic
stacks in general.
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