Contact monoids and Stein cobordisms
نویسندگان
چکیده
منابع مشابه
Strongly fillable contact 3–manifolds without Stein fillings
We use the Ozsváth–Szabó contact invariant to produce examples of strongly symplectically fillable contact 3–manifolds which are not Stein fillable. AMS Classification numbers Primary: 57R17 Secondary: 57R57
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Given a set of simplifying moves on 3-manifolds, we apply them to a given 3-manifold M as long as possible. What we get is a root of M . For us, it makes sense to consider three types of moves: compressions along 2-spheres, proper discs and proper annuli having boundary circles in different components of ∂M . Our main result is that for the above moves the root of any 3-manifold exists and is u...
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We introduce an equivalence relation, called cobordism, for words and produce cobordism invariants of words.
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ژورنال
عنوان ژورنال: Mathematical Research Letters
سال: 2012
ISSN: 1073-2780,1945-001X
DOI: 10.4310/mrl.2012.v19.n1.a4