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x0. Introduction (0.1). The purpose of this paper is to construct a spectral sequence from the motivic cohomology of a eld F to its algebraic K-theory: Here we deene motivic cohomology via higher Chow groups 2], 5] X t i ? 1) for the aane p-simplex. We have face and degeneracy maps deened in the usual way.
A report on recent results and outstanding problems concerning motives associated to graphs.
0. Introduction 0.1. Secondary (Chern-Simons) characteristic classes associated to bundles with connection play an important role in differential geometry. We propose to investigate a related construction for algebraic bundles. Non-flat algebraic connections for bundles on complex pro-jective manifolds are virtually non-existent (we know of none), and a… (More)
The cosimplicial scheme ∆ • = ∆ was used in  to define higher Chow groups. In this note, we let t tend to 0 and replace ∆ • by a degenerate version Q • = Q to define an additive version of the higher Chow groups. For a field k, we show the Chow group of 0-cycles on Q n in this theory is isomorphic to the absolute (n − 1)-Kähler forms Ω n−1 k. An… (More)
To Kazuya Kato, with fondness and profound respect, on the occasion of his fiftieth birthday
— We study the sunset graph defined as the scalar two-point self-energy at two-loop order. We evaluate the sunset integral for all identical internal masses in two dimensions. We give two calculations for the sunset amplitude; one based on an interpretation of the amplitude as an inhomogeneous solution of a classical Picard-Fuchs differential equation, and… (More)
— We study the Feynman integral for the three-banana graph defined as the scalar two-point self-energy at three-loop order. The Feynman integral is evaluated for all identical internal masses in two space-time dimensions. Two calculations are given for the Feynman integral; one based on an interpretation of the integral as an inhomogeneous solution of a… (More)
INTRODUCTION Urban minority groups, such as those living in north Manhattan, are generally underserved with regard to cancer prevention and screening practices. Primary care physicians are in a critical position to counsel their patients on these subjects and to order screening tests for their patients. METHODS Eighty-four primary care physicians in two… (More)
INTRODUCTION Effective preventive services are needed most in underserved, inner-city settings that suffer disproportionately from morbidity and mortality. Primary care physicians can play an important role in the provision of efficacious cancer prevention and screening services to patients in these communities. METHOD We surveyed 122 primary care… (More)