Аннотация:
We introduce the notion of an instanton bundle on a Fano threefold of index 2. For such bundles we give an analogue of a monadic description and discuss the curve of jumping lines. The cases of threefolds of degree 5 and 4 are considered in a greater detail.
The author was partially supported by RFFI grants 10-01-93110, 10-01-93113, 11-01-00393, 11-01-00568,
11-01-92613-KO-a, NSh-5139.2012.1, the grant of the Simons foundation, and by AG Laboratory SU-HSE, RF government
grant, ag.11.G34.31.0023.
Поступила в редакцию: 07.01.2012 Принята в печать: 15.02.2012