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                First article in new electronic journal
                _Theory and Applications of Categories_

  Below is the abstract of the recently published first article 
in the electronic journal _Theory and Applications of Categories_. 

  If you wish to receive abstracts of future articles in the journal,
please subscribe to the journal, if you have not already done so.

  You can subscribe by simply sending your full name and postal address
in an email with subject `subscription' to tac@mta.ca. Subscription 
is free.

  While the journal is availabe for free and open over the Internet, 
it is useful to have a base of known subscribers.  You may rest 
assured that the subscription list will not be used externally. 

  The _full paper_ may be accessed on the Web through
URL: http://www.tac.mta.ca/tac/vol1.htm
Compressed versions of the files are also available. Please report any 
difficulties to tac@mta.ca


**Oriented Singular Homology by Michael Barr**

  We formulate three slightly different notions of oriented singular
chain complexes and show that all three are naturally homotopic to
ordinary singular chain complexes.

  _Theory and Applications of Categories_, Vol 1 (1995), 1-9.

  Access by FTP is available too; the paper is stored in two forms:
DVI (?=dvi) and PostScript (?=ps) respectively at URL:
ftp://ftp.tac.mta.ca/pub/tac/volumes/1995/n1/v1n1.?