noun
- the first letter of the Hebrew alphabet
- a symbol representing the smallest infinite cardinal number in set theory
Usage: mathematics
Examples
- The Hebrew word begins with an aleph.
- Students learning Hebrew must memorize aleph as the first letter.
- The mathematician used aleph-null to represent countable infinity.
- In Cantor’s theory, aleph represents different levels of infinity.
- The ancient scroll showed a beautifully written aleph.
- Aleph-zero is the cardinality of the set of natural numbers.