1,751,449 research outputs found

    [Stammbuch Bertha Seifert]

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    [STAMMBUCH BERTHA SEIFERT] [Stammbuch Bertha Seifert] ( - ) Cover ( - ) Exlibris: Hans Stula ( - ) Illustrationen und Einträge, S. 1 - 19 (1) Einträge, S. 21 - 39 (21) Einträge, S. 41 - 59 (41) Einträge, S. 61 - 67 (61

    Diameter Bounds on the Complex of Minimal Genus Seifert Surfaces for Hyperbolic Knot

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    Given a link L in the 3-sphere, one can build simplicial complexes MS(L) and IS(L), called the Kakimizu complexes. These complexes have isotopy classes of minimal genus and incompressible Seifert surfaces for L as their vertex sets and have simplicial structures defined via a disjointness property. The Kakimizu complexes enjoy many topological properties and are conjectured to be contractible. Following the work of Gabai on sutured manifolds and Murasugi sums, MS(L) and IS(L) have been classified for various classes of links. This thesis focuses on hyperbolic knots; using minimal surface representatives and Kakimizu's formulation of the path-metric on MS(K), we are able to bound the diameter of this complex in terms of only the genus of the knot. The techniques of this paper are also generalized to one-cusped manifolds with a preferred relative homology class

    Rational Seifert Surfaces in Seifert Filtered Spaces

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    Rationally null-homologous links in Seifert fibered spaces may be represented combinatorially via labeled diagrams. We introduce an additional condition on a labeled link diagram and prove that it is equivalent to the existence of a rational Seifert surface for the link. In the case when this condition is satisfied, we generalize Seifert\u27s algorithm to explicitly construct a rational Seifert surface for any rationally null-homologous link. As an application of the techniques developed in the paper, we derive closed formulae for the rational Thurston-Bennequin and rotation numbers of a rationally null-homologous Legendrian knot in a contact Seifert fibered space. --author-supplied descriptio

    Harold Seifert oral history recording Part 3

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    An audio recording of an oral history of Harold Seifert. There is a transcript of this interview

    Brief von Eberhard K. Seifert an Kurt Rothschild

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    BRIEF VON EBERHARD K. SEIFERT AN KURT ROTHSCHILD Brief von Eberhard K. Seifert an Kurt Rothschild ([1]

    Harold Seifert oral history recording Part 2

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    An audio recording of an oral history of Harold Seifert. There is a transcript of this interview

    Harold Seifert oral history recording Part 1

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    An audio recording of an oral history of Harold Seifert. There is a transcript of this interview

    Lasius bombycina Seifert & Galkowski, 2016, sp. nov.

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    Lasius bombycina sp. nov. Holotype worker labeled "Holotype Lasius bombycina Seifert & Galkowski " and ": 38.63 °N, 34.91 °E, 1060 m, Capadoce: Ürgüp, SSE-facing meadow, S. Aron 1990 "; 4 paratype workers on a second pin, one male and a gyne paratype on a third pin, all with the same site labeling as the holotype but labeled "Paratype Lasius bombycina Seifert & Galkowski "; Senckenberg Museum für Naturkunde Görlitz. Three paratype workers labelled " Türkei _ 26, Prov. Kayseri, Ziyarettepesi Gecidi (ca. 130 km E. Kayseri), 1900 mH, 0 9.05. 1997, Leg. A.Schulz, K.Vock, M. Sanetra 01"; Naturhistorisches Museum Wien.Published as part of Seifert, Bernhard & Galkowski, Christophe, 2016, The Westpalaearctic Lasius paralienus complex (Hymenoptera: Formicidae) contains three species in Zootaxa 4132 (1), DOI: 10.11646/zootaxa.4132.1.4, http://zenodo.org/record/25874

    Meyer Seifert, papers undated

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    Meyer Seifert was the Cantor of Congregation Adath Jeshurun on Blue Hill Avenue in Roxbury, Massachusetts. This collection contains a poem, written in Hebrew, titled, “Song for the Celebration of the Opening of the University.”This collection is located at the American Jewish Historical Society located in Boston. For information on accessing collections at AJHS Boston please visit their website at: http://www.ajhsboston.org/index.htm.unknownFinding Aid available in Reading Room and on Internet.far031

    Krebß / [... übergeben von Johann Seifert, J. U. C. Regensburg, 1724.]

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    Stammtafeln der Familie KrebßSonderdruck aus: Seifert, Johann. Stam-Taffeln Gelehrter Leute. - Regensburg ; 3.1728Erscheinungsjahr nach Datierung auf Bl.
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