Advances in mathematics

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  Año 2009, Vol. 221, Número 3

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    Butterflies I: morphisms of 2-group stacks

    Ettore Aldrovandi, Behrang Noohi

    págs. 687-773

    
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    Counting hyperelliptic curves

    Enric Nart i Viñals

    págs. 774-787

    
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    Conformally invariant systems of differential operators

    L. Barchini, Anthony C. Kable, Roger Zierau

    págs. 788-811

    
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    Shelling coxeter-like complexes and sorting on trees

    Patricia Hersh

    págs. 812-829

    
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    Collapsed 5-manifolds with pinched positive sectional curvature

    Fuquan Fang, Xiaochun Rong

    págs. 830-860

    
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    A parabolic two-phase obstacle-like equation

    Henrik Shahgholian, Nina Uraltseva, Georg S. Weiss

    págs. 861-881

    
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    A matroid invariant via the "K"-theory of the Grassmannian

    David E. Speyer

    págs. 882-913

    
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    Blow-ups and resolutions of strong Kähler with torsion metrics

    Anna Fino , Adriano Tomassini

    págs. 914-935

    
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    Tropical representation of Weyl groups associated with certain rational varieties

    Teruhisa Tsuda, Tomoyuki Takenawa

    págs. 936-954

    
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    On the defining relations for generalized "q"-Schur algebras

    Stephen Doty, Anthony Giaquinto, John M. Sullivan

    págs. 955-982

    
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    Complexity and cohomology of cohomological Mackey functors

    Serge Bouc

    págs. 983-1045