Hartogs number

名词 n.
中文释义

英文释义

名词 n.
  1. For a given set X, the cardinality of the least ordinal number α such that there is no injection from α into X.
    — 1973 [North-Holland], Thomas J. Jech, The Axiom of Choice, 2013, Dover, page 160, Let p be an infinite cardinal, |X|=p and let א=א(p) be the Hartogs number of p.

词形变化

Hartogs numbers plural Hartogs' number alternative

词源

After German-Jewish mathematician Friedrich Hartogs (1874–1943).
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