1 Jul
1992
1 Jul
'92
4:46 p.m.
The groupoid enriched category of chain complexes is explored in Gabriel and Zisman. Yes a three cat is possible as is a four .... or infinity cat version. Interesting ideas relating to this can be found in Grothendieck's cotangent complex lecture notes. Ronnie, Tim, Markus and Larrie(visiting); Bangor. ==============================================================================