Topology Of Manifolds And Homotopy Theory with the participation of, with the particpation of MITACS. Topology of manifolds and Homotopy Theory. March 20 25, 2004. Organizers http://www.pims.math.ca/birs/workshops/2004/04w5533/
Extractions: with the participation of Organizers: Ian Hambleton (McMaster University), Erik Pedersen (SUNY Binghamton), Gunnar Carlsson (Stanford University). The purpose of this meeting is to bring together researchers in a wide variety of areas in algebraic and geometric topology, to investigate problems of current interest, and to make new connections. In particular, we believe the time is ripe for a productive exchange of ideas and viewpoints among mathematicians in active areas of homotopy theory and the topology of manifolds, in the hope of enriching the future development of both subjects. The actual topics of the meeting will be determined by the participants. Here are some of their research interests: (1) "Structured homotopy theory", meaning homotopy theory on the category of modules over a ring spectrum, (2) Controlled and equivariant surgery, (3) Conjectures of Baum-Connes and Novikov on assembly maps in K-theory and L-theory. (4) New product structures on the homology of the free loop space of a manifold, moduli spaces
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Extractions: Menu Tel +44 (0)1625 619916 Fax +44 (0)1625 511158 We recently moved to this larger building. All our manifolds and stainless steel exhausts have jigs set up so that we can manufacture your parts and despatch them by courier. We can deliver exhaust systems anywhere in the UK, Europe, or even the rest of the world. JP Exhausts was established in 1973. Over the last thirty years we have made stainless steel exhausts for practically every vehicle ever made. JP Exhausts Ltd Goodall Street Macclesfield Cheshire UK The staff to serve you. Please call or Email to find out if we can supply your stainless steel exhaust or manifold or system. We also have a two ramp fitting bay for those unusual and rare vehicles which need specialist attention. Email the webmaster regarding this site
Alex Suciu Northeastern University, Boston. Topology and combinatorics hyperplane arrangements, the topology and geometry of manifolds, the homology of discrete groups, the homotopy theory of highdimensional knots. http://www.math.neu.edu/~suciu/
Extractions: I hail from Bucharest, Romania. I did my undergraduate studies in Mathematics at the University of Bucharest ; here is a picture from those days. For my graduate studies, I went to Columbia University, in New York City; here is a picture from that time (taken in Cambridge, UK). After a J.W. Gibbs Instructorship at Yale University , in New Haven, I came to Northeastern University, in Boston, where I've been ever since. Math publications Other publications Citations Meetings organized ... Talks My research interests are in Topology , and how it relates to Algebra, Geometry, and Combinatorics. I mainly study the topology and combinatorics of hyperplane arrangements. I also study various problems concerning the topology and geometry of knots, links, and manifolds, and the homology and lower central series of discrete groups. Some recent papers and preprints: Torsion in Milnor fiber homology (with Dan Cohen and Graham Denham Algebraic and Geometric Topology Chen Lie algebras (with Stefan Papadima International Math. Research Notices
Curvature And Topology Special Session on Convergence of manifolds. 900920 am (321 Memorial Hall) Rough Isometries Between Non-Compact Riemannian manifolds. http://comet.lehman.cuny.edu/sormani/ams/lnj04.html
Extractions: Guofang Wei (wei at math.ucsb.edu) University of California at Santa Barbara Information: Speakers: Cristina Abreau Suzuki , CUNY Graduate Center, csuzuki at mindspring.com, "Rough Isometries Between Non-Compact Riemannian Manifolds" Stephanie Alexander , U.I.U.C. sba at math.uiuc.edu, "Generalized cone constructions in Alexandrov Riemannian and Lorentz spaces" (w/ Richard Bishop). Igor Belegradek , Georgia Tech, ib at math.gatech.edu, "Negative pinching and nilpotent groups." work with Vitali Kapovitch
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BoatUS BoatTECH Guides: Exhaust Manifolds Exhaust manifolds. Exhaust manifolds last forever, don t they? Even parts. manifolds and risers live in an incredibly harsh environment. http://www.boatus.com/boattech/exh.htm
Extractions: Exhaust Manifolds Exhaust manifolds last forever, don't they? Even if they do fail, it isn't a major problem, right? These are common reactions when people are asked about their boat's manifold. Unfortunately, exhaust manifolds are important, and ignoring them can potentially lead to expensive problems, perhaps an engine rebuild. There is an additional hassle-manifolds are normally damaged by corrosion, so they're not covered by your insurance policy. All of this makes the outlook seem rather bleak. It's not as bad as it seems, though. All that's needed is a change in attitude. Rather than seeing it as a "sealed for life" component, view a manifold as a service item to be replaced at regular intervals. If you do this, major problems can be avoided. Life Expectancy How long will a manifold last? Obviously the way you use your boat will be a factor, as will the type of water it's on. Saltwater boats are going to see a shorter manifold life when compared to their freshwater counterparts. Most experts suggest that a manifold will have a life expectancy of six to eight years. However, heavy use in saltwater can see this drop to as low as three years, while lightly used freshwater boats can get up to 20 years out of a manifold. One thing is for certain, the older your manifold gets, the more likely it is to fail. This is clearly shown in the chart below.
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Modular Curves Advanced Course on Geometric 3manifolds A Euro Summer School. Cyclic branched covering along knots or links in S 3 are examples of such manifolds. http://www.crm.es/PastActivities/Act2002-2003/Geom3-Mani/AdCGeom3Man.htm
Extractions: Summary: The goal of these lectures is to present a proof that a closed, orientable, irreducidble and atoroidal 3-manifold which admits a non-trivial, orientation preserving, non-free symmetry of finite order, admits either an elliptic or hyperbolic metric. Cyclic branched covering along knots or links in S are examples of such manifolds. First we will recall basic facts in 3-dimensional topology and then introduce the main tools needed for the proof. We will use results from the lectures of Leeb and Otal. Summary: Cone manifolds are singular metric spaces with curvature bounded below and with sigularities of a very restricted type. They play a central role in the geometrization of orbifolds. We will discuss basic geometric results concerning their small-scale structure and possible degenerations, and explain how they are used in the proof of the Orbifolds Theorem.
Prof. W.B.R. Lickorish University of Cambridge. Topology, threedimensional manifolds, knot theory. http://www.dpmms.cam.ac.uk/site2002/People/lickorish_wbr.html
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Extractions: Email: lackenby(at)maths.ox.ac.uk 9-11 August 2004, Oxford University This workshop is part of a new initiative by Oxford and Princeton to strengthen links between the two universities. There will be two main speakers: Dave Gabai and Zoltan Szabo, who will each give three talks. I will be giving a couple of talks, and there will be slots for a few other speakers. This event is open to any mathematician who wishes to attend. Some travel support is available for graduate students at UK universities or at Princeton. This workshop is funded in part by the London Mathematical Society. The workshop website is now up and running. The Whitney trick, Topology and Its Applications 71 (1996) 115-118. Fox's congruence classes and the quantum-SU(2) invariants of links in 3-manifolds, Comment. Math. Helv. 71 (1996) 664-677. Surfaces, surgery and unknotting operations, Math. Ann. 308 (1997) 615-632.
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GT Monographs: Volume 5 Geometry and Topology Monographs. Volume 5 Fourmanifolds, Geometries and Knots. Jonathan Hillman. The goal of this book is to characterize http://www.maths.warwick.ac.uk/gt/gtmcontents5.html
Extractions: This book arose out of two earlier books 2-Knots and their Groups and The Algebraic Characterization of Geometric 4-Manifolds , published by Cambridge University Press for the Australian Mathematical Society and for the London Mathematical Society, respectively. About a quarter of the present text has been taken from these books, and I thank Cambridge University Press for their permission to use this material . The arguments have been improved and the results strengthened, notably in using Bowditch's homological criterion for virtual surface groups to streamline the results on surface bundles, using L^2 methods instead of localization, completing the characterization of mapping tori, relaxing the hypotheses on torsion or on abelian normal subgroups in the fundamental group and in deriving the results on 2-knot groups from the work on 4-manifolds. The main tools used are cohomology of groups, equivariant Poincare duality and (to a lesser extent) L^2-cohomology, 3-manifold theory and surgery. Jonathan Hillman
Extractions: Mark Brittenham Summaries of research papers and preprints Note: To download a file, instead of viewing it, hold down the shift key while clicking on the link to the file. For Mac users, the appropriate key is the option key (I think). Essential laminations in Seifert-fibered spaces ,Topology no. 1 (1993) 61-85. We show that an essential lamination in a Seifert-fibered space M always contains a sublamination which can be made either `horizontal' or `vertical' with respect to the foliation of M by circles. As a consequence, we find the first (and, to date, only) examples of 3-manifolds with universal cover R^3 which do not contain any essential laminations.
GT Monographs: Volume 4 Volume 4 Invariants of knots and 3manifolds (Kyoto 2001). 2. Pages 13-28 QHI, 3-manifolds scissors congruence classes and the volume conjecture http://www.maths.warwick.ac.uk/gt/gtmcontents4.html
Extractions: Preface The workshop and seminars on "Invariants of Knots and 3-Manifolds" took place at the Research Institute for Mathematical Sciences (RIMS), Kyoto University, in September 2001. The workshop was held over the period September 17-21. Seminars were held on the Tuesdays, Wednesdays and Thursdays of the other weeks of September, including "Goussarov day" on September 25. Since the interaction between geometry and mathematical physics in the 1980s, many invariants of knots and 3-manifolds have been discovered and studied: polynomial invariants such as the Jones polynomial, Vassiliev invariants, the Kontsevich invariant of knots, quantum and perturbative invariants, the LMO invariant and finite type invariants of 3-manifolds. The discovery and analysis of the enormous number of these invariants yielded a new area: the study of invariants of knots and 3-manifolds (from another viewpoint, the study of the sets of knots and 3-manifolds). There are also developing topics related to other areas such as hyperbolic geometry via the volume conjecture and the theory of operator algebras via invariants arising from 6j-symbols. On the other hand, recent works have almost completed the topological reconstruction of the invariants derived from the Chern-Simons field theory. An aim of the workshop and seminars was to discuss future directions for this area. To discuss these matters fully, we planned 1 month of activities, relatively longer than usual. Further, to encourage discussions among the participants, we arranged a short problem session after each talk, and requested the speaker to give his/her open problems there. Many interesting problems were presented in these problem sessions and, based on them, we had valuable discussions in and between seminars and the workshop. Open problems discussed there were edited and formed into a problem list, which, I hope, will clarify the present frontier of this area and assist readers when considering future directions.