Amorphous set

In set theory, an amorphous set is an infinite set which is not the disjoint union of two infinite subsets.[1]

  1. ^ Truss, J. K. (1995), "The structure of amorphous sets", Annals of Pure and Applied Logic, 73 (2): 191–233, doi:10.1016/0168-0072(94)00024-W, MR 1332569.