Aleph

Aleph or alef (א) is the first letter of the Hebrew alphabet.

Aleph or alef may also refer to:

• Alef, was the concurrent programming language used in early editions of Plan 9.
• Aleph, a short story by author Georg Brandes.
• Aleph, a modern Buddhist religious group in Japan formerly known as Aum Shinrikyo.
• Aleph, an advanced system for inductive logic programming.
• ALEPH detector or ALEPH experiment, one of the four detectors of the Large Electron-Positron Collider (LEP) at CERN.
• Aleph number or Cardinality, the measurement of mathematical sets:
  • Aleph null (<math>\aleph_0<math>), the cardinality of countably infinite sets.
  • Aleph one (<math>\aleph_1<math>), the cardinality of certain uncountably infinite sets, possibly including the real numbers.
• Aleph One, an ongoing project related to the computer game Marathon.
• Aleph programming language
• El Aleph (The Aleph), a short story by author Jorge Luis Borges

da:Alef he:א hu:א ja:アレフ sv:Alef