Guidelines for the preparation of journal issues
for the
Electronic Library of Mathematics

@version: EMIS-j-1.0
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# ### GENERAL JOURNAL INFORMATION ###
 
@journaltitle: Beitr\"age zur Algebra und Geometrie / Contributions to 
Algebra and Geometry
@ISSN: 0138-4821
@year: 1996
@volume: 37
@issue: 2
@remark: dedicated to N.N. on the occasion of his Nth birthday
@EOH
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# ### INFORMATION ON THE SINGLE ARTICLES ###

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@author: Gene Abrams, Claudia Menini
@affiliation: Department of Mathematics, University of Colorado, Colorado 
 Springs CO, 
    80933 U.S.A., abrams@vision.uccs.edu, Dipartimento di Matematica, 
    Universit\`{a} di Ferrara, Via Machiavelli 35, 44100 Ferrara, Italy, 
    men@dns.unife.it
@title: Skew Semigroup Rings
@language: English
@pages: 209 - 230
@abstract: We investigate properties of skew semigroup rings. Specifically, 
we give necessary and sufficient conditions which ensure that these rings are 
unital
    finite normalizing extensions of the scalars. We then present a large class
    of examples of such skew semigroup rings in situations more general than
    groups.
@filename: b37h2abr
@EOI
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@author: Wolfgang K\"uhnel
@affiliation: Mathematisches Institut B, Universit\"at Stuttgart,
    D -- 70550 Stuttgart\\ e-mail: kuehnel@mathematik.uni-stuttgart.de
@title: Centrally-symmetric Tight Surfaces and Graph Embeddings
@language: English 
@pages: 347 - 354
@classification1: 53C42
@classification2: 52B70, 05C10
@abstract: We prove a sharp upper bound for the substantial codimension of a
    centrally-symmetric tight polyhedral surface in Euclidean space. This is
    related to embeddings of the edge graph of the $m$-octahedron into surfaces.
@filename: b37h2kue
@EOI
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@author: Majid M. Ali
@affiliation: Al-Zaytoonah University, Dept.~of Mathematics and Computer 
Science,
    P.O.Box 130, Amman 11733, JORDAN
@title: The Ohm Type Properties for Multiplication Ideals
@language: English
@pages: 399 - 414
@classification1: 13A15
@classification2: 13B20
@keywords: Multiplication ideal, Ohm condition, weak-cancellation ideal, 
localization
@abstract: Let $R$ be a commutative ring with identity. An ideal $I$ in $R$ is 
called
    a multiplication ideal if every ideal contained in $I$ is a multiple of
    $I$. Ohm's properties for finitely generated ideals in Pr\"ufer domains
    are investigated by Gilmer. These properties are generalized by Naoum and
    studied for finitely generated multiplication ideals. The purpose of this
    work is to generalize the results of Gilmer and Naoum to the case of
    multiplication ideals (not necessarily finitely generated ones).
@filename: b37h2ali
@EOI
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