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Everything about Standard part function

Function from the limited hyperreal to the real numbers

In nonstandard analysis, the standard part function is a function from the limited (finite) hyperreal numbers to the real numbers. Briefly, the standard part function "rounds off" a finite hyperreal to the nearest real. It associates to every such hyperreal, the unique real infinitely close to it, i.e. is infinitesimal. As such, it is a mathematical implementation of the historical concept of adequality introduced by Pierre de Fermat, as well as Leibniz's transcendental law of homogeneity. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Standard part functionA 5-minute orientation
  2. Skim a recent paper: The Structure of Density-Potential Mapping. Part I: Standard Density-Functional TheoryInfluential work since 2022
  3. Pick up a classic book: Human Nature and Conduct An Introduction to Social PsychologyThe most-reprinted book on the subject
  4. Read the landmark paper: New international technical standard on interpretive strategies for lung function tests (Part 1)Cited 1 times
  5. Go sideways: Nonstandard calculusA closely related topic
  6. Go sideways: HyperintegerA closely related topic

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