See aleph number and beth number and gimel function. It was derived from the Phoenician and Hebrew letter aleph - an ox or leader. Every aleph is the cardinality of some ordinal. Its name is thought to have corresponded closely to the Paleo-Hebrew or Arabic aleph. Each finite set is well-orderable, but does not have an aleph as its cardinality. Some texts instead separate the digraph from the single vov with a silent aleph. Alpha was derived from "aleph", which in Phoenician means "ox". The aleph numbers are indexed by ordinal numbers. Any weakly inaccessible cardinal is also a fixed point of the aleph function. Therefore, the cardinalities of the number classes correspond one-to-one with the aleph numbers. He used this inconsistent multiplicity to prove the aleph theorem. The Romaniotes traditionally gave to a child a mystical document known as an "Aleph". These angels sought to become more powerful by adding an Aleph to their name. "Aleph" received widespread acclaim from critics. Grey also contributed vocals to the Current 93 album "Aleph at Hallucinatory Mountain".