aleph

English

Alternative forms

  • alef (Hebrew, Persian)
  • alif (Arabic)
  • alaph (Syriac), olaph (Western Syriac)

Etymology

Borrowed from Hebrew אלף (álef), with a Hellenized ph spelling due to influence from alpha. Doublet of alpha.

Noun

aleph (plural alephs)

  1. The first letter of the Proto-Canaanite alphabet, and its descendants in descended Semitic scripts, such as Phoenician 𐤀 (ʾ, ʾaleph), Aramaic 𐡀 (ʾ), Classical Syriac ܐ ('ālaph), Hebrew א (aleph) and Arabic ا (ʾalif).
  2. (mathematics) The cardinality of an infinite well-ordered (or well-orderable) set.
    The Axiom of Choice is equivalent to the proposition that every infinite cardinal is an aleph.

Derived terms

Translations

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