RT Journal Article T1 Osculating properties of decomposable scrolls A1 Mallavibarrena Martínez de Castro, Raquel A1 Lanteri, Antonio AB Osculating spaces of decomposable scrolls (of my genus and not necessarily normal) arc studied and their inflectional loci are related to those of their generating curves by using systematically an idea introduced by Piene and Sacchiero in the setting of rational normal scrolls. In this broader setting the extra components of the second discriminant locus-deriving from flexes-are investigated and a new class of uninflected surface scrolls is presented and characterized. Further properties related to osculation are discussed for (not necessarily decomposable) scrolls. PB Wiley-Blackwell SN 0025-584X YR 2009 FD 2009-11 LK https://hdl.handle.net/20.500.14352/42336 UL https://hdl.handle.net/20.500.14352/42336 LA eng NO Italian Government NO Spanish Ministry of Education NO University of Milan DS Docta Complutense RD 5 jul 2025