An example of semiquandle and u-polynomials for flat virtual knots via this semiquandle coloring

Flat virtual links are some variant of links, and semiquandles are counterparts of quandles or biquandles, which axiomize the Reidemeister-like moves. In this paper, we give some example of semiquandle and introduce an invariant for flat virtual knot using it. We also explain that it relates to the u-polynomials for flat virtual knots.