Arthur Ogus, Cohomology of the infinitesimal site Annales scientifiques de l’École Normale Supérieure, Sér. 4, 8 no. 3 (1975), p. 295-318 (numdam)
it is shown that if is proper over an algebraically closed field of characteristic , and embeds into a smooth scheme over , then the infinitesimal cohomology of coincides with etale cohomology with coefficients in (or more generally if we work with the infinitesimal site of over ).
Revised on March 30, 2011 08:47:59
by Urs Schreiber