Digital Library of Mathematical Functions
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NIST
Notations

Notations N

*ABCDEFGHIJKLM♦N♦OPQRSTUVWXYZ
𝒩
winding number; (1.9.32)
intersection; Common Notations and Definitions
set of all positive integers; Common Notations and Definitions
N(z)
Airy modulus function; 9.8(i)
Nν(z)=Yν(z)
common alternative notation; 10.1
(with Yν(z): Bessel function of the second kind)
Nν(x)
modulus of derivatives of Bessel functions; (10.18.2)
N(n,k)
Narayana number; (26.6.3)
x
backward difference; 18.1(i)
nc(z,k)
Jacobian elliptic function; (22.2.5)
nd(z,k)
Jacobian elliptic function; (22.2.6)
Nen(1,2)(z,q)=12πgo,n(h)sen(0,q)Msn(3,4)(z,h)
notation used by Arscott (1964b), McLachlan (1947); 28.1
(with sen(z,q): Mathieu function and Msn(j)(z,h): radial Mathieu function)
ns(z,k)
Jacobian elliptic function; (22.2.4)
ν(n)
number of distinct primes dividing n; 27.2(i)