Favard constant
In mathematics, the Favard constant, also called the Akhiezer–Krein–Favard constant, of order r is defined as
This constant is named after the French mathematician Jean Favard, and after the Soviet mathematicians Naum Akhiezer and Mark Krein.
Particular values
Uses
This constant is used in solutions of several extremal problems, for example
- Favard's constant is the sharp constant in Jackson's inequality for trigonometric polynomials
- the sharp constants in the Landau–Kolmogorov inequality are expressed via Favard's constants
- Norms of periodic perfect splines.
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