Everything About ___
Live briefing

Everything about Elementary recursive function

Concept in computability theory

The term elementary was originally introduced by László Kalmár in the context of computability theory. He defined the class of elementary recursive functions as a subset of the primitive recursive functions — specifically, those that can be computed using a limited set of operations such as composition, bounded sums, and bounded products. These functions grow no faster than a fixed-height tower of exponentiation. Not all primitive recursive functions are elementary; for example, tetration grows too rapidly to be included in the elementary class. The elementary recursive functions correspond to the class of the Grzegorczyk hierarchy. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Elementary recursive functionA 5-minute orientation
  2. Pick up a classic book: Discrete and combinatorial mathematicsThe most-reprinted book on the subject
  3. Read the landmark paper: Characterizing the elementary recursive functions by a fragment of GĂśdel's TCited 10 times
  4. Go sideways: LOOP (programming language)A closely related topic
  5. Go sideways: Primitive recursive functionA closely related topic

📖 Definitions

No dictionary entry for this exact phrase.

🏆 Landmark papers (most cited)

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics