منابع مشابه
Pulling Apart Molecular Magnetism
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An obstruction theory for representing homotopy classes of surfaces in 4–manifolds by immersions with pairwise disjoint images is developed, using the theory of non-repeating Whitney towers. The accompanying higher-order intersection invariants provide a geometric generalization of Milnor’s link-homotopy invariants, and can give the complete obstruction to pulling apart 2–spheres in certain fam...
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ژورنال
عنوان ژورنال: Mnemosyne
سال: 2019
ISSN: 0026-7074,1568-525X
DOI: 10.1163/1568525x-12342684