422,771 research outputs found
On the Adams Spectral Sequence for R-modules
We discuss the Adams Spectral Sequence for R-modules based on commutative
localized regular quotient ring spectra over a commutative S-algebra R in the
sense of Elmendorf, Kriz, Mandell, May and Strickland. The formulation of this
spectral sequence is similar to the classical case and the calculation of its
E_2-term involves the cohomology of certain `brave new Hopf algebroids' E^R_*E.
In working out the details we resurrect Adams' original approach to Universal
Coefficient Spectral Sequences for modules over an R ring spectrum.
We show that the Adams Spectral Sequence for S_R based on a commutative
localized regular quotient R ring spectrum E=R/I[X^{-1}] converges to the
homotopy of the E-nilpotent completion pi_*hat{L}^R_ES_R=R_*[X^{-1}]^hat_{I_*}.
We also show that when the generating regular sequence of I_* is finite,
hatL^R_ES_R is equivalent to L^R_ES_R, the Bousfield localization of S_R with
respect to E-theory. The spectral sequence here collapses at its E_2-term but
it does not have a vanishing line because of the presence of polynomial
generators of positive cohomological degree. Thus only one of Bousfield's two
standard convergence criteria applies here even though we have this
equivalence. The details involve the construction of an I-adic tower R/I <--
R/I^2 <-- ... <-- R/I^s <-- R/I^{s+1} <-- ... whose homotopy limit is
hatL^R_ES_R. We describe some examples for the motivating case R=MU.Comment: Published 7 April 2001 by Algebraic and Geometric Topology at
http://www.maths.warwick.ac.uk/agt/AGTVol1/agt-1-9.abs.html . Erratum added 9
May 200
The English Bugaboo - Cruikshank to Talbot
This post examines some aspects of the British diachronic illustrative tradition in connection with Talbot's Alice in Sunderland (2007). In this post, James Baker argues how what binds together the bugaboos of Talbot, Tenniel and the Georgian satirists is..
From QCD to Dual Superconductivity to Effective String Theory
We show how an effective field theory of long distance QCD, describing a dual
superconductor, can be expressed as an effective string theory of
superconducting vortices. We use the semiclassical expansion of this effective
string theory about a classical rotating string solution in any spacetime
dimension D to obtain the semiclassical meson energy spectrum. We argue that
the experimental data on Regge trajectories along with numerical simulations of
the heavy quark potentials provide good evidence for an effective string
description of long distance QCD.Comment: Talk given at the 5th International Conference on Quark Confinement
and the Hadron Spectrum, Gargnano, Italy, September 200
The Problem with Structural Unemployment in the U.S.
Following the most recent recession, an attempt has been made to explain current levels of unemployment as resulting from structural unemployment, or a mismatch between the skills of the unemployed and the types of jobs available. The evidence, however, indicates that the issue is actually a lack of aggregate demand. Since accepting one of these views over the other will lead to very different policy solutions, it is important to accurately assess the cause of unemployment.This issue brief finds that the evidence is overwhelming consistent with the view that a lack of demand, caused by the collapse of the housing bubble is at the root of U.S. unemployment. In this context, measures that focus on improving skills - a remedy for structural unemployment - will have little effect on overall employment
CBO Projects More Severe Downturn
The new economic projections from the Congressional Budget Office show the economy remaining well below its potential level of output until 2014. The projections show the unemployment rate averaging 10.2 percent in 2010 and gradually edging down to the long-term sustainable rate of 4.8 percent by 2014. Over this 4 year period, the workforce will face a substantially higher risk of unemployment or underemployment due to insufficient demand in the economy. This paper highlights some of the main implications of CBO's new economic projections
Increasing Inequality in the United States
This report traces the increase in U.S. inequality over the last quarter-century. It outlines the myriad drivers of this trend, including deliberate policy decisions on trade, immigration, interest rates, and health care costs. The paper was published and distributed in Germany through the Friedrich Ebert Foundation (IB200611A)
What Is Safe Sex ? Understanding the Need for Sex Education Reform
Currently, the United States has no standardized requirement for sex education. This has precipitated a large gap in knowledge about safe sex and a lack of consensus in current social and educational policy. Debates about abstinence-only and comprehensive sex education have reached a standstill. In an effort to advance the discussion, this paper reveals that the neuroscience behind adolescent sexual risk taking provides underutilized evidence for comprehensive sex education programs. Research shows that adolescents have biological differences in their brain structure that result in a decision-making process different from that of adults, one that can preference rash decisions and potentially unsafe behavior. Therefore, current approaches to social and education policy for teens should change, to reflect this research and in-school curricula should evolve to more effectively reduce rates of unsafe sexual behaviors. Funding for such programs would more than pay for themselves with the resulting decrease in teen pregnancy and sexually transmitted diseases
Hong Kong Employment Law Update - November 2016
The employment law landscape has been relatively flat over the last 6 months, with few material changes to employment legislation or landmark cases, aside from the appeal decision in Tadjudin Sunny v Bank of America. This newsletter brings you some recent legislative developments and case law highlights
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