24,836 research outputs found
String homology of spheres and projective spaces
We study a spectral sequence that computes the (mod 2) S^1-equivariant
homology of the free loop space LM of a manifold M (the "string homology" of
M). Using it and knowledge of the string topology operations on the homology of
LM, we compute the string homology of M when M is a sphere or a projective
space.Comment: 11 page
Review of War Beyond Words: Languages of Remembrance from the Great War to the Present by Jay Winter
Review of War Beyond Words: Languages of Remembrance from the Great War to the Present by Jay Winter
Do Your Exercises: Reader Participation in Wittgenstein's Investigations
Many theorists have focused on Wittgenstein’s use of examples, but I argue that examples form only half of his method. Rather than continuing the disjointed style of his Cambridge lectures, Wittgenstein returns to the techniques he employed while teaching elementary school. Philosophical Investigations trains the reader as a math class trains a student—‘by means of examples and by exercises’ (§208). Its numbered passages, carefully arranged, provide a series of demonstrations and practice problems. I guide the reader through one such series, demonstrating how the exercises build upon one another and give us ample opportunity to hone our problem-solving skills. Through careful practice, we learn to pass the test Wittgenstein poses when he claims that something is ‘easy to imagine’ (§19). Whereas other critics have viewed the Investigations as merely a diagnosis of our philosophical delusions, I claim that Wittgenstein also writes a prescription for our disease: Do your exercises
User-Based Data Collection Techniques and Strategies for Evaluating Networked Information Services
published or submitted for publicatio
Method and apparatus for holding two separate metal pieces together for welding
A method of holding two separate metal pieces together for welding is described including the steps of overlapping a portion of one of the metal pieces on a portion of the other metal piece, encasing the overlapping metal piece in a compressible device, drawing the compressible device into an enclosure, and compressing a portion of the compressible device around the overlapping portions of the metal pieces for holding the metal pieces under constant and equal pressure during welding. The preferred apparatus for performing the method utilizes a support mechanism to support the two separate metal pieces in an overlapping configuration; a compressible device surrounding the support mechanism and at least one of the metal pieces, and a compressing device surrounding the compressible device for compressing the compressible device around the overlapping portions of the metal pieces, thus providing constant and equal pressure at all points on the overlapping portions of the metal pieces
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