ALMOST POSITIVE LINKS HAVE NEGATIVE SIGNATURE
نویسندگان
چکیده
منابع مشابه
Almost Positive Links Have Negative Signature
We analyze properties of links which have diagrams with a small number of negative crossings. We show that if a nontrivial link has a diagram with all crossings positive except possibly one, then the signature of the link is negative. If a link diagram has two negative crossings, we show that the signature of the link is nonpositive with the exception of the left-handed Hopf link (with possible...
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ژورنال
عنوان ژورنال: Journal of Knot Theory and Its Ramifications
سال: 2010
ISSN: 0218-2165,1793-6527
DOI: 10.1142/s0218216510007838