Edited volumes

1) K. Ono et al., Proceedings for the conference 'Modular forms are everywhere'
  (Special volume of the journal Research in the Mathematical Sciences)
  Res. Math. Sci. 6 (2019), no. 1.
 
  This conference was on the occasion of the 65th birthday of Don Zagier.
 

2) Pieter Moree, Anke Pohl, Ludomir Snoha and Tom Ward (Eds.),
  Dynamics: Topology and Numbers, Contemporary Mathematics 744 (2020), pp. 358.
 
  This conference was in the memory of Sergiy Kolyada.