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changed the statement 2016-11-07 df29deb
Patch for algebra.tex by Dario Weissmann

Thanks to Dario Weissmann
Lightly edited by Johan de Jong
assigned tag 04EC 2010-04-08 d88cf7f
Tags: added tags
changed the label to definition-universal-thickening 2010-04-06 194f673
Universal first order thickenings

	Added definition + lemma on immersions
changed the statement 2010-04-06 194f673
Universal first order thickenings

	Added definition + lemma on immersions
changed the statement 2010-04-06 c343399
Universal first order thickenings

	of formally unramified morphisms
changed the statement 2010-04-03 4d42afa
More Morphisms Spaces: Formally *

	Abstract discussion of formally * transformations of functors,
	where * is smooth, etale, or unramified.
created statement with label definition-infinitesimal-thickening in algebra.tex 2010-04-03 9c22ffa
Algebra: Infinitesimal thickenings

	If R ---> S is a formally unramified ring map, then S has a
	first infinitesimal thickening over S, which is a surjection S'
	---> S with square zero kernel satsifying a suitable universal
	property.