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Language peer sets for Algol 48:
United States
United States/1998
Designed 1998
1990s languages
New internationlism
Genus True Algol58s
Numerical Scientific
True Algol58s
Generation of Algol 58/IAL
Algol family
True Algol58s/1998
Generation of Algol 58/IAL/1998
Algol family/1998
True Algol58s/United States
Generation of Algol 58/IAL/United States
Algol family/United States
Numerical Scientific
Numerical Scientific/1998
Numerical Scientific/us

Algol 48(ID:5841/alg026)

McCarthy's putative theorised Algol 50 precursor 

alternate simple view
Country: United States
Designed 1998
Genus: True Algol58s
Sammet category: Numerical Scientific

Paper language created by McCarthy as an introduction to ideas in Elephant 2000, conceived of as the precursor to Algol 50 ( as Algol 58 stood to Algol 60)

"These are the explicit use of time in a programming language and the representation of the program by logical sentences. The former permits a direct expression of the operational semantics of the language, and the latter permits proofs of properties of programs without any special theory of programming."

Related languages
ALGOL 58 Algol 48   Extension of
Elephant 2000 Algol 48   Co-development

  • McCarthy, John (1998) McCarthy, John "Elephant 2000: A Programming Language Based on Speech Acts" Stanford University 1998 Extract: Introduction Online copy Algol 48 Page Algol 48 and 50 page
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