Reference for Y. Manin's idea of "algebraic geometry over the symmetric monoidal model category of motives."


Has been sugested to me that this was made in a Manin's letter. There is an escaned copy?


Some work in this direction has been made in the thesis of Spitzweck, but I refer to first references of Manin.



Reference for Manin's idea on algebraic geometry over the symmetric monoidal model category of Motives
The only reference ever given for this is



> 
> Y. Manin, *Letter*, March 2000
> 
> 
> 


I don't think this letter (from Manin to Bertrand Toen, I presume) has ever been made public, and definitely it hasn't been published. But you might want to try asking Toen for a copy.


As you known, some of the math involved was worked out in Spitzweck's thesis, "Operads, Algebras and Modules in Model Categories and Motives". Note that he thanks Toen in the introduction, and Manin is listed as "Korreferent".


