Name Yuka Kotorii Tokyo Institute of Technology Session Jan 10 16:20~16:40 E11-102 $\bar{\mu}$ invariant of nanophrases Two link diagrams are link homotopic if one can be transformed into the other by a sequence of Reidemeister moves and self crossing changes. Milnor introduced an invariant under link homotopy called $\bar{\mu}$. In this talk, we extend the link homotopy to nanophrases corresponding to virtual link and $\bar{\mu}$ invariant to nanophrases. 102-1-10/2012.1.10kotorii.pdf