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Glite Dictionary
∑ A math symbol 🔤 A Hebrew letter
alef

alef

9.9
A symbol used in mathematics to show the size of infinite sets
  • noun
  • /ˈɑːlɛf/
  • Specialized
translation icon : alef
  • In set theory, alef is used to describe the size of infinite sets.

Examples

  • The mathematician explained that alef null is the smallest infinite cardinal number.

  • The symbol alef represents infinite sets in mathematics.

  • The symbol alef appears frequently in advanced mathematics textbooks.

  • In set theory, alef is crucial for understanding cardinalities.

  • The mathematician explained that alef null is the smallest infinite cardinal number.

  • In set theory, alef is used to describe the size of infinite sets.

  • The symbol alef appears frequently in advanced mathematics textbooks.

Surface Forms

alef singular
alephs plural

Etymology

Alef is also used in math as the symbol ℵ to show sizes of 'infinity'. A mathematician chose the Hebrew first letter aleph for the smallest infinite size called aleph-null, so alef now stands for different sizes of 'infinity' in mathematics.