Categorification of the skein module of tangles by M. M. Asaeda, J. H. Przytycki, and A. S. Sikora The double shuffle relations for $p$-adic multiple zeta values by A. Besser and H. Furusho Galois $p$-groups unramified at $p$--A survey by N. Boston On capitulation theorems for infinite groups by K. Fuluta Multiple zeta values and Grothendieck-Teichmuller groups by H. Furusho Asymptotics of $q$-difference equations by S. Garoufalidis and J. S. Geronimo The mapping class group acts reducibly on $SU(n)$-character varieties by W. M. Goldman Pro-$p$ link groups and $p$-homology groups by J. Hillman, D. Matei, and M. Morishita A quantum introduction to knot theory by H. Murakami Classical knot invariants and elementary number theory by K. Murasugi Harmonic and equianharmonic equations in the Grothendieck-Teichmuller group, II by H. Nakamura and H. Tsunogai On $p$-adic properties of the Witten-Reshetikhin-Turaev invariant by L. Rozansky Seiberg-Witten integrable systems and periods of rational elliptic surfaces by Y. Shimizu On the finiteness of various Galois representations by Y. Taguchi Some new-type equations in the Grothendieck-Teichmuller group arising from geometry of $\mathcal{M}_{0,5}$ by H. Tsunogai.