The Stacks project

Better handling invertible modules

Of course an invertible module should be defined as a module such that
tensoring with it is a self-equivalence on the category of modules. This
doesn't change a thing beyong the definition, because we usually are
working on locally ringed spaces or topoi where an invertible module is
the same thing as a locally free module of rank 1.

LaTeX: Hom and SheafHom

	Introduced the macros

	\def\Hom{\mathop{\rm Hom}\nolimits}
	\def\SheafHom{\mathop{\mathcal{H}\!{\it om}}\nolimits}

	and replaced all the occurences of \text{Hom} and \textit{Hom}
	with these.

More filling proofs in chow.tex

	modified:   chow.tex
	modified:   divisors.tex
	new file:   dualizing.tex
	modified:   homology.tex
	modified:   modules.tex
	modified:   my.bib
	modified:   schemes.tex

Started tags infrastructure

	new file:   scripts/add_tags.py
	modified:   scripts/functions.py
	new file:   tags/initial_tags
	new file:   tags/tags

Changed the index to at least have an alphabetized list of terms defined
in the project. Thanks Cathy!

	modified:   algebra.tex
	modified:   categories.tex
	modified:   constructions.tex
	modified:   exercises.tex
	modified:   fpqc-descent.tex
	modified:   groupoids.tex
	modified:   homology.tex
	modified:   hypercovering.tex
	modified:   modules.tex
	modified:   morphisms.tex
	modified:   properties.tex
	modified:   schemes.tex
	modified:   scripts/functions.py
	modified:   scripts/make_index.py
	modified:   sheaves.tex
	modified:   simplicial.tex
	modified:   sites.tex
	modified:   spaces.tex
	modified:   topology.tex

A bit more stuff on constructing schemes, specifically
relative spectrum
vector bundles
Proj of a ring
relative Proj
projective bundles

	modified:   algebra.tex
	modified:   coding.tex
	modified:   constructions.tex
	modified:   modules.tex
	modified:   morphisms.tex
	modified:   schemes.tex
	modified:   sheaves.tex

Added stuff on Proj of a graded ring

	modified:   algebra.tex
	modified:   constructions.tex
	modified:   modules.tex
	modified:   properties.tex
	modified:   schemes.tex