Nori motive

under construction



Madhav Nori invented an original approach to mixed motives, in the spirit of Tannakian theory, but based on a specific Nori's Tannakian theorem. Unfortunately his original work, which has been lectured on some summer schools and conferences is not widely available in written form. Maxim Kontsevich based his approach to periods and their appearance in deformation quantization partly on Nori’s insight.


Characterization of the universality of Nori motives via Barr completion of the syntactic category of the theory (in the formal logical sense) of singular cohomology of schemes is in

For more on this topos theory perspective, see

Revised on November 26, 2015 15:08:27 by Urs Schreiber (