Hartley function

proper noun

A measure of uncertainty. If a sample from a finite set A uniformly at random is picked, the information revealed after the outcome is known is given by the Hartley function H_0(A):=log_b|A|, where |A| denotes the cardinality of A.

Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

proper nounthe Hartley function
  1. mathematicsA measure of uncertainty. If a sample from a finite set A uniformly at random is picked, the information revealed after the outcome is known is given by the Hartley function H_0(A):=log_b|A|, where |A| denotes the cardinality of A.

Origin

Introduced by Ralph Hartley in 1928.

Full word history & related roots →
Cite this entry
APA

Hartley function. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/Hartley%20function

MLA

“Hartley function.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Hartley%20function. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “Hartley function,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/Hartley%20function.

Source: Hartley function on Wiktionary, CC BY-SA 4.0.