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History of tag 0CXS

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type time link
moved the statement to file obsolete.tex 2020-09-05 d1729e5
Move a lemma to obsolete chapter

Due to the reorganization of the proof in the previous commit
changed the proof 2020-09-05 d1729e5
Move a lemma to obsolete chapter

Due to the reorganization of the proof in the previous commit
changed the proof 2020-09-05 6776803
Still didn't fix it correctly. Sigh!

Thanks to 李一笑

OK, I will try not to make a habit of fixing things wrong...
changed the proof 2020-09-04 3e7633b
Split out a lemma in artin and apply it

Thanks to 李一笑

Since finite type points aren't closed there can be specializations
between them. Thus we can ask if versality of objects "generalizes".

We missed this point in the proof of 0CXU as well as another one which
we will fix in the next commit
changed the proof 2017-07-05 d25f0c0
Fix internal reference
assigned tag 0CXS 2016-11-06 0a3bfd5
Tags: Added new tags
created statement with label lemma-infinite-sequence in artin.tex 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.