[Review of] Francis Paul Prucha, Indian-White Relations in the United States: A Bibliography of Works Published, 1975-1980

This volume is the long-awaited supplement to Francis Paul Prucha\u27s Bibliographical Guide to the History of Indian-White Relations in the United States, published by the University of Chicago Press in 1977. That work, which contained 9705 items, was complete to 1975. The supplement, with 3400 titles, covers the historical literature made available between 1975 and 1980. Organized into fifteen subject divisions and excellently cross-referenced with a thirty-six page index, the supplement continues the same high quality of Prucha\u27s previous efforts to bring some useable order to the bewildering complexity of American Indian historiography

The radial distributions of a heavy-light meson on a lattice

In an earlier work, the charge (vector) and matter (scalar) radial distributions of heavy-light mesons were measured in the quenched approximation on a 16^3 times 24 lattice with a quark-gluon coupling of 5.7, a lattice spacing of 0.17 fm, and a hopping parameter corresponding to a light quark mass about that of the strange quark. Several improvements are now made: 1) The configurations are generated using dynamical fermions with a quark-gluon coupling of 5.2 (a lattice spacing of 0.14 fm); 2) Many more gauge configurations are included (78 compared with the earlier 20); 3) The distributions at many off-axis, in addition to on-axis, points are measured; 4) The data-analysis is much more complete. In particular, distributions involving excited states are extracted. The exponential decay of the charge and matter distributions can be described by mesons of mass 0.9+-0.1 and 1.5+-0.1 GeV respectively - values that are consistent with those of vector and scalar qqbar-states calculated directly with the same lattice parameters.Comment: 3 pages, 4 figures, Lattice2002(heavyquark

On strict passivity and its application to interpolation and Hl control

The authors introduce the L2-system and derive necessary and sufficient conditions for these systems to be strictly passive. Strictly passive L2-systems are characterized as having a representation in terms of a co-J-lossless matrix. A state space proof is developed and provides a Riccati equation characterization of a strictly passive L 2-system, as well as a formula for the co-J-lossless matrix representation. Applications to Nevanlinna-Pick interpolation and an H∞ filtering problem are considere

Summing Over World-Sheet Boundaries

The moduli associated with boundaries in a Riemann surface are parametrized by the positions and strengths of electric charges. This suggests a method for summing over orientable Riemann surfaces with Dirichlet boundary conditions on the embedding coordinates. A light-cone parameterization of such boundaries is also discussed.Comment: 10 page