余集

餘集
yújí
  1. complement of a set S (math.)
  2. the set of all x not in set S

CEDICT

math

Entry Composition

=1 余 yú
  1. (literary) I; me
  2. variant of 余 yú
=1 余 yú
  1. extra
  2. surplus
  3. remaining
  4. remainder after division
  5. (following numerical value) or more
  6. in excess of (some number)
  7. residue (math.)
  8. after
  9. I
  10. me
2 集 jí
  1. to gather
  2. to collect
  3. collected works
  4. classifier for sections of a TV series etc: episode