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  • 1
    Electronic Resource
    Electronic Resource
    Translation generalized quadrangles (1996)
    Springer
    Archiv der Mathematik 67 (1996), S. 253-264 
    Details
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01195241
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Generalized polygons with highly transitive collineation groups (1995)
    Springer
    Geometriae dedicata 58 (1995), S. 91-100 
    Details
    ISSN: 1572-9168
    Keywords: 51E12 ; 51H15 ; 51H20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract It will be proved that the compact connected topological generalized quadrangles which admit a collineation group that acts transitively on ordered pentagons are precisely the real or complex orthogonal quadrangles, up to duality.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01263479
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Correction: Generalized Polygons with Highly Transitive Collineation Groups (1998)
    Springer
    Geometriae dedicata 72 (1998), S. 217-220 
    Details
    ISSN: 1572-9168
    Keywords: Generalized Polygons ; Collineation group.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In Geom Dedicata 58 (1995), 91–100, the author tried to classify generalized quadrangles with a collineation group acting transitively on ordered pentagons. Unfortunately, this paper contains several mistakes. The main result is affected such that there now is an additional compact connected quadrangle (and its dual) with a 5-gon transitive group. I am indebted to Martin Wolfrom who pointed out the error and offered a correction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1005041420574
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    Paper (German National Licenses)
    Fulltext
  • 4
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    Computing Optimal Morse Matchings (2004)
    Details
    Publication Date: 2020-12-15
    Description: Morse matchings capture the essential structural information of discrete Morse functions. We show that computing optimal Morse matchings is NP-hard and give an integer programming formulation for the problem. Then we present polyhedral results for the corresponding polytope and report on computational results.
    Keywords: ddc:000
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/postscript
    Format: application/pdf
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    OPUS
  • 5
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    One-Point Suspensions and Wreath Products of Polytopes and Spheres (2004)
    Details
    Publication Date: 2014-02-26
    Description: It is known that the suspension of a simplicial complex can be realized with only one additional point. Suitable iterations of this construction generate highly symmetric simplicial complexes with a various interesting combinatorial and topological properties. In particular, infinitely many non-PL spheres as well as contactible simplicial complexes with a vertex-transitive group of automorphisms cab be contained in this way.
    Keywords: ddc:000
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/postscript
    Format: application/pdf
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    OPUS
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