10 citations · 10 across the 3 of their papers we have counts for
3 papers
math.AG2009
Note on double coverings and binary quadratic forms
Daniel Ferrand
Let E be a rank two vector bundle on a scheme X. The following three structures are shown to be equivalent : a) A primitive quadratic map q: E --> L, with values in an invertible m…
math.CT2005★ 10 cited
On the non additivity of the trace in derived categories
Daniel Ferrand
In this note we provide an example of an endomorphism of a short exact sequence of perfect complexes, with the trace of the middle map not equal to the sum of the traces of the two…
math.AC2003
Monogenous algebras. Back to Kronecker
Daniel Ferrand
In this note we develop some properties of those algebras (called here locally simple) which can be generated by a single element after, if need be, a faithfully flat extension. Fo…