aleph-null

== English == === Etymology === From its mathematical symbol ℵ₀, from א, aleph, the first letter of the Hebrew alphabet. === Proper noun === aleph-null (uncountable) (set theory) The first of the transfinite cardinal numbers; corresponds to the number of natural numbers. ==== Synonyms ==== (first transfinite cardinal number): aleph-naught, aleph-nought, aleph-zero, ℵ₀ ==== Related terms ==== aleph-one ==== Translations ====