In mathematics, the Hermite or Pólya class is a set of entire functions satisfying the requirement that if E(z) is in the class, then: E(z) has no zero (root) in the upper half-plane. | E ( x + i y ) | ≥ | E ( x − i y ) | {\displaystyle |E(x+iy)|\geq |E(x-iy)|} for x and y real and y positive.
In mathematics, the Hermite or Pólya class is a set of entire functions satisfying the requirement that if E(z) is in the class, then: E(z) has no zero (root) in the upper half-plane. | E ( x + i y ) | ≥ | E ( x − i y ) | {\displaystyle |E(x+iy)|\geq |E(x-iy)|} for x and y real and y positive.
Source: Wikipedia "Hermite class" · CC BY-SA 4.0
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