Knots provide a starting point for several branches of lowdimensional topology. Often, lowdimensional topologists are more interested in the complement of a knot than in the knot itself. Several types of invariants allow to distinguish between knots. In addition, a topological criterion for distinguishing different geometric types of knot comple...
Creator:
Schultens, Jennifer (University of California, Davis)
Created:
2019-06-17
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Surfaces appear naturally in low dimensional topology and its applications. They can be described in several different ways, each with advantages and disadvantages. A complete classification can be given. Several structures, including geometric structures and curve complexes provide information on surfaces and higher dimensional manifolds.
Creator:
Schultens, Jennifer (University of California, Davis)
Created:
2019-06-20
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Seifert fibered spaces are 3-dimensional manifolds with a 2-dimensional quotient space. Surfaces in Seifert fibered spaces fall into two categories: Compressible and incompressible. The structure of Seifert fibered spaces allows for a complete description of essential surfaces in Seifert fibered spaces in terms of a simplicial complex derived fr...
Creator:
Schultens, Jennifer (University of California, Davis)
Created:
2019-06-26
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Seifert's algorithm provides a step-by-step procedure to produce a compact orientable surface whose boundary is a given knot. The surface obtained is not unique but its existence enables the construction of an infinite cyclic cover. The Kakimizu complex of a knot encodes Seifert surfaces. Not surprisingly, the infinite cyclic cover provides insi...
Creator:
Schultens, Jennifer (University of California, Davis)
Created:
2019-06-21
Contributed By:
University of Minnesota, Institute for Mathematics and its Applications.
Announcement of campaign event on Monday, July 18 1932, at 8:30 in the evening, at the city hall of Berlin-Friedenau, admission 0.30 Mark, unemployed with ID 0.10 Mark
Creator:
Schultz
Contributor:
Nationalsozialstische Deutsche Arbeiter-Partei
Created:
1932
Contributed By:
University of Minnesota Libraries, Upper Midwest Literary Archives.
Cartographic Details: Scales vary. Relief shown by hachures. Depths shown by soundings. Cover title. Includes cross section profile and inset: Trollhä. In Swedish.
Creator:
Schultz, F.
Created:
1837
Contributed By:
University of Minnesota Libraries, John R. Borchert Map Library.