Subject: new xxx listings From: Mark Hovey Date: 21 Apr 1998 07:37:05 +0000 Here are two papers crosslisted to the algebraic topology section of xxx, submitted in the last week. Mark Hovey New papers uploaded to xxx between 4/16/98 and 4/21/98: 1. http://xxx.lanl.gov/dvi/math.AG/9804078 From: Eduard Looijenga Date: Thu, 16 Apr 1998 12:16:55 GMT (11kb) Title: M_g is a union of g-1 affine open subsets Authors: Eduard Looijenga Comments: LaTeX2e, 9 pages Subj-class: Algebraic Geometry; Algebraic Topology MSC-class: 14H15; 14F17 \\ We prove the assertion of the title. This implies that the cohomological dimension of the moduli space M_g (of smooth curves of genus g) is at most g-2 for quasi-coherent sheaves (this amplifies Diaz's theorem which says that M_g has no complete subvariety of dimension g-1) and at most 4g-5 for constructible sheaves. We also recover Harer's theorem which says that M_g has the homotopy type of finite cell complex of dimension 4g-5. We find similar results for the moduli space of n-pointed curves of genus g. \\ ( http://xxx.lanl.gov/abs/math/9804078 , 11kb) 2. http://xxx.lanl.gov/dvi/math.GN/9804085 From: Krystyna Kuperberg Date: Sun, 19 Apr 1998 20:11:23 GMT (9kb) Title: Bihomogeneity and Menger manifolds Authors: Krystyna Kuperberg (Auburn University) Comments: 9 pages Subj-class: General Topology; Algebraic Topology MSC-class: 54F35 (primary), 55M99 (secondary) Journal-ref: Top. Appl. 84 (1998), 175-184 \\ For every triple of integers a, b, and c, such that a>O, b>0, and c>1, there is a homogeneous, non-bihomogeneous continuum whose every point has a neighborhood homeomorphic the Cartesian product of three Menger compacta m^a, m^b, and m^c. In particular, there is a homogeneous, non-bihomogeneous, Peano continuum of covering dimension four. \\ ( http://xxx.lanl.gov/abs/math/9804085 , 9kb) ---------------------Instructions----------------------------- To subscribe or unsubscribe to this list, send a message to Don Davis at dmd1@lehigh.edu with your e-mail address and name. Please make sure he is using the correct e-mail address for you. To see past issues of this mailing list, point your WWW browser to http://www.cs.wesleyan.edu/Math/Guests/Mark If this doesn't work or is missing a few issues, try http://www.lehigh.edu/~dmd1/public/www-data/algtop.html , which also has the other messages sent to Don's list. To get the papers listed above, point your WWW client (Mosaic, Netscape) to the URL listed. The general Hopf archive URL is http://hopf.math.purdue.edu There are links to conference announcements, Purdue seminars, and other math related things on this page as well. The general xxx archive URL is http://xxx.lanl.gov. More useful is the front end developed by Greg Kuperberg: http://front.math.ucdavis.edu You can also use ftp to hopf.math.purdue.edu, and login as ftp. Then cd to pub. Files are organized by author name, so papers by me are in pub/Hovey. If you want to download a file using ftp, you must type binary before you type get . To put a paper of yours on the archive, cd to /pub/incoming. Transfer the dvi file using binary, by first typing binary then put You should also transfer an abstract as well. Clarence has explicit instructions for the form of this abstract: see http://hopf.math.purdue.edu/pub/submissions.html. In particular, your abstract is meant to be read by humans, so should be as readable as possible. I reserve the right to edit unreadable abstracts. You should then e-mail Clarence at wilker@math.purdue.edu telling him what you have uploaded. For instructions on uploading papers to xxx, see http://front.math.ucdavis.edu I am solely responsible for these messages---don't send complaints about them to Clarence. Thanks to Clarence for creating and maintaining the archive. ------- End of forwarded message ------- ------- End of forwarded message -------