M. Kobayashi introduced a notion of duality of weight systems. We tone this notion slightly down to a notion called coupling. We show that coupling induces a relation between the reduced zeta functions of the monodromy operators of the corresponding singularities generalizing an observation of K. Saito concerning Arnold's strange duality. We show that the weight systems of the mirror symmetric ...

Sometimes humans are well served by forgetting unique traumatic experiences that can ruin their future. But social phenomena are larger than individual lives and the challenge that Tilo Hartmann and Anne-Katrin Arnold's essay poses is important, not just for DGPuK. This journal article is available at ScholarlyCommons: http://repository.upenn.edu/asc_papers/38 ----D. GEDACHTNIS DER tb.~""IS'i"'...

Elizabeth Arnold received her B.A. in Government from Georgetown University in 1989, her M.Ed. in Mathematics education in 1993 from George Mason University, and her Ph.D. from the University of Maryland at College Park in 2000. She is currently an assistant professor at James Madison University. Her research area is in computational commutative algebra, in particular applications and algorithm...

For many classically chaotic systems it is believed that the quantum wave functions become uniformly distributed, that is the matrix elements of smooth observables tend to the phase space average of the observable. In this paper we study the fluctuations of the matrix elements for the desymmetrized quantum cat map. We present a conjecture for the distribution of the normalized matrix elements, ...

1Center for Applied Health Research, Baylor Scott & White Health | School of Public Health, Texas A&M Health Science Center, College Station. 2Department of Human Development and Family Studies, Iowa State University, Ames. 3Institute of Gerontology, University of Georgia, Athens. 4Georgia Centenarian Study group included Maurice MacDonald, S. Michal Jazwinski, Robert C. Green, Marla Gearing, W...

We study the fluctuations of the diagonal matrix elements of the quantum cat map about their limit. We show that after suitable normalization, the fifth centered moment for the Hecke basis vanishes in the semiclassical limit, confirming in part a conjecture of Kurlberg and Rudnick. We also study sums of matrix elements lying in short windows. For observables with zero mean, the first moment of ...

To examine the RNA polymerase (EC 2.7.7.6) specificity of RNA maturation/utilization and transcriptional enhancement, we constructed a chimeric plasmid (pPolI-CAT) in which a promoter for mouse rRNA gene transcription was placed adjacent the coding sequences for chloramphenicol acetyltransferase (CAT; EC 2.3.1.28). A number of other constructs, including plasmids also containing a murine sarcom...

Seth Jacobowitz, in his paper "Hellenism, Hebraism, and the Eugenics of Culture in E.M. Forster's Howards End," explores how the culturalist principles of Hellenism and Hebraism theorized by Matthew Arnold as the basis of Englishness in Culture and Anarchy (1869) were incorporated into the text of E.M. Forster's Howards End (1910) to show the close institutional and conceptual linkages Forster ...

The free motion of a rigid one-dimensional stick colliding elastically within an innnitely massive circular wall is rst shown to be equivalent to the three-dimensional motion of a billiard ball within a spiral column and then mapped onto a two-dimensional billiard problem with a rotating billiard wall. Indications that such a system has chaotic orbits and can possess integrable orbits is provid...

Old World cover well-documented events, and to European readers the greatest interest lies in the essays-about a third of the total here presented-that deal with the emergence of ophthalmology in the United States during the second half of the last century. As elsewhere, saints and sinners-generally colourful-pass across the stage; and tragedy too, as shown by the essay on Homberger. ARNOLD SORSBY