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Definition 2024


unlesss

unlesss

English

Abbreviation

unlesss

  1. (mathematics, logic) Precisely unless.
    • 1990, James Glimm, The Legacy of John Von Neumann, American Mathematical Society, ISBN 0821814877, page 279,
      Partial Order: GH unlesss (unless and only unless) H ≥ some GR or some HLG.
    • 1999, V. K. Balachandran, Topological Algebras, 2000 North-Holland edition, ISBN 0444506098, pages 78–79 :
      A subset is called absorbing if to each there is a real number such that for all with . Trivially the set is absorbing; on the other hand can never be absorbing (unlesss ).
    • 2004, William Fraser, Susan Hirshberg, and David Wolfe, "The Structure of the Distributive Lattice of Games Born by Day n", in Integers: Electronic Journal of Combinatorial Number Theory 5(2) (2005), page 2,
      GH     unlesss HGR or HLG for some GRGR or some HLHL. ¶ (Analogous to “iff”, the term “unlesss” means “unless and only unless”.)

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