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See also: א [U+05D0 HEBREW LETTER ALEF]
Unicode name ALEF SYMBOL
Code point U+2135
Entity number ℵ
Unicode block Letterlike Symbols
LaTeX input \aleph
[U+2134] [U+2136]



Introduced by Georg Cantor, based on the Hebrew letter א, initial letter of אינסוף (infinity).


‎(English symbol name aleph)

  1. (set theory) Symbol for the cardinality of a well-orderable infinite set.

Usage notes[edit]

  • Unicode has two code points for the Hebrew letter aleph. For Hebrew text, א, should be used . This character should be used for the mathematical symbol since it retains the left-to-right orientation of the text.

See also[edit]