We obtain converse Marcinkiewicz-Zygmund inequalities such as k P kLp[ 1;1] C 0@ n X j=1 j jP (tj)j 1A1=p for polynomials P of degree n 1, under general conditions on the points ftjgj=1 and on the function . The weights f jgj=1 are appropriately chosen. We illustrate the results by applying them to extended Lagrange interpolation for exponential weights on [ 1; 1].

Elaine Ngan, Jason J. Northey, Claire M. Brown, Josie Ursini-Siegel and Peter M. Siegel* Goodman Cancer Research Centre, McGill University, Montréal, QC H3A 1A3, Canada Department of Medicine, McGill University, Montréal, QC H3A 1A1, Canada Department of Biochemistry, McGill University, Montréal, QC H3G 1Y6, Canada Department of Physiology, McGill University, Montréal, QC H3G 1Y6, Canada Lady D...

1 Division of Clinical Epidemiology, Department of Medicine, McGill University Health Center, McGill University, V Building, Royal Victoria Hospital, 687 Pine Avenue West, Montreal, QC, Canada H3A 1A1 2 Clinical Research Department, London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK 3Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, ...

Abbreviations: GBC: Gallbladder Cancer; PCR: Polymerase Chain Reaction; SSCP: Single Strand Conformation Polymorphism; MSI: Microsatellite Instability; CIS: Carcinoma In Situ; AJPBD: Anomalous Junction of Pancreatico Biliary Duct; FHIT: Fragile Histidine Triad; CC: Chronic Cholecystitis; XGC: Xanthogranulomatous Cholecystitis; SAGE: Serial Analysis of Gene Expression; CTGF: Connective Tissue Gr...