| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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| Outline of Final Research Achievements |
We studied about quandles and some generalization of quandles, and gave some application for links, surface-links and handlebody-links as below. For constructions of surface-links, we could not succeed in introducing new method of constructions.
1. For some Alexander quandle, we showed that the colorings of a knot are corresponnding to the homoomorphisms from the fundamental group of some finite cover of the 3-dimensional space branched over the knot to an abelian group. 2. We introduced the notion of a twisted quandle, and gave some generalization of the twisted Alexander invariants and simplification of the calcutation. (joint with Atsushi Ishii) 3. We showed that rack colorings are invariants for 2-dimensional knots. (joint with Kokoro Tanaka)
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