Extensions of Filtered Ogus Structures
Idioma
en
Article de revue
Este ítem está publicado en
Applied Categorical Structures. 2019-12-16, vol. 28, n° 1, p. 143-148
Springer Verlag (Germany)
Resumen en inglés
We compute the Ext group of the (filtered) Ogus category over a number field $K$. In particular we prove that the filtered Ogus realisation of mixed motives is not fully faithful.