Digital Library of Mathematical Functions
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NIST
Notations

Notations U

*ABCDEFGHIJKLMNOPQRST♦U♦VWXYZ
union; Common Notations and Definitions
U(x)=πBi(x)
notation used by Fock (1945); 9.1
(with Bi(z): Airy function)
Un(x)
Chebyshev polynomial of the second kind; 18.3.1
Um(t)
generalized Airy function; 9.13(i)
Un*(x)
shifted Chebyshev polynomial of the second kind; 18.3.1
U(a,z)
parabolic cylinder function; 12.2(i)
U(x,t)
Voigt function; (7.19.1)
U¯(a,x)
parabolic cylinder function; 12.2(vi)
U(a,b,z)
Kummer confluent hypergeometric function; (13.2.6)
uE2nm(z,k2)
Lamé polynomial; (29.12.1)