Four functors formalism

Publication Type:

Journal Article

Source:

Unpublished, p.1–20 (1999)

URL:

http://www.math.ias.edu/vladimir/files/2015_todeligne3_copy.pdf

Notes:

<p>One of the most important ideas of the four functor formalism was the proof that a projective morphism&nbsp;is lower transversal (satisfies a generalized analog of the proper base change theorem). Unfortunately no complete proof remained but all of the main ideas are contained in these notes:</p>

<p><br />
<br />
<a href="/vladimir/sites/math.ias.edu.vladimir/files/1998-11-13-notes.pdf">1998-11-13-notes.pdf</a><br />
<a href="/vladimir/sites/math.ias.edu.vladimir/files/1998-11-21-notes.pdf">1998-11-21-notes.pdf</a><br />
<a href="/vladimir/sites/math.ias.edu.vladimir/files/2002-01-08-notes.pdf">2002-01-08-notes.pdf</a></p>