Bertolin, Cristiana (2004) Biextensions of 1-Motives by 1-Motives. Preprintreihe der Fakultät Mathematik 10/2004, Working Paper, Regensburg.
Let S be a scheme and let Gi (i = 1; 2; 3) be an extension of an abelian S-scheme Ai by a S-torus Yi(1): We ¯rst sketch the proof of the following result: In the topos Tfppf , the category of biextensions of (G1;G2) by G3 is equivalent to the category of biextensions of (A1;A2) by Y3(1). Using this result, we de¯ne the notion of biextension of 1-motives by 1-motives. If M(S) denotes what ...
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|Item Type:||Monograph (Working Paper)|
|Institutions:||Mathematics > Prof. Dr. Uwe Jannsen|
|Subjects:||500 Science > 510 Mathematics|
|Refereed:||No, this version has not been refereed yet (as with preprints)|
|Created at the University of Regensburg:||Yes|
|Deposited On:||12 Apr 2010 05:46|
|Last Modified:||13 Mar 2014 13:17|