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Everything about Smooth maximum

Mathematical approximation

In mathematics, a smooth maximum of an indexed family x1, ..., xn of numbers is a smooth approximation to the maximum function meaning a parametric family of functions such that for every ⁠⁠, the function ⁠⁠ is smooth, and the family converges to the maximum function ⁠⁠ as ⁠⁠. The concept of smooth minimum is similarly defined. In many cases, a single family approximates both: maximum as the parameter goes to positive infinity, minimum as the parameter goes to negative infinity; in symbols, ⁠⁠ as ⁠⁠ and ⁠⁠ as ⁠⁠. The term can also be used loosely for a specific smooth function that behaves similarly to a maximum, without necessarily being part of a parametrized family. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Smooth maximumA 5-minute orientation
  2. Skim a recent paper: Spreading of a droplet impacting on a smooth flat surface: How liquid viscosity influences the maximum spreading time and spreading ratioInfluential work since 2022
  3. Pick up a classic book: Nonlinear elliptic partial differential equationsThe most-reprinted book on the subject
  4. Read the landmark paper: Smooth unbiased multivariate probability simulators for maximum likelihood estimation of limited dependent variable modelsCited 262 times
  5. Go sideways: Liouville functionA closely related topic
  6. Go sideways: Exponential mechanismA closely related topic

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