OpenMath Content Dictionary: airy

Canonical URL:
http://www.openmath.org/CDs/airy.ocd
CD File:
airy.ocd
CD as XML Encoded OpenMath:
airy.omcd
Defines:
Ai, Ai2, Bi, Bi2
Date:
2002-01-19
Version:
1 (Revision 2)
Review Date:
2017-12-31
Status:
experimental


     This document is distributed in the hope that it will be useful, 
     but WITHOUT ANY WARRANTY; without even the implied warranty of 
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

     The copyright holder grants you permission to redistribute this 
     document freely as a verbatim copy. Furthermore, the copyright
     holder permits you to develop any derived work from this document
     provided that the following conditions are met.
       a) The derived work acknowledges the fact that it is derived from
          this document, and maintains a prominent reference in the 
          work to the original source.
       b) The fact that the derived work is not the original OpenMath 
          document is stated prominently in the derived work.  Moreover if
          both this document and the derived work are Content Dictionaries
          then the derived work must include a different CDName element,
          chosen so that it cannot be confused with any works adopted by
          the OpenMath Society.  In particular, if there is a Content 
          Dictionary Group whose name is, for example, `math' containing
          Content Dictionaries named `math1', `math2' etc., then you should 
          not name a derived Content Dictionary `mathN' where N is an integer.
          However you are free to name it `private_mathN' or some such.  This
          is because the names `mathN' may be used by the OpenMath Society
          for future extensions.
       c) The derived work is distributed under terms that allow the
          compilation of derived works, but keep paragraphs a) and b)
          intact.  The simplest way to do this is to distribute the derived
          work under the OpenMath license, but this is not a requirement.
     If you have questions about this license please contact the OpenMath
     society at http://www.openmath.org.
  Author: James Davenport

This content dictionary contains symbols to describe the Airy functions and associated functions.


Ai

Description:

The symbol Ai defines the unary Airy Ai function; as in Abramovitz & Stegun equation 10.4.1. This is a solution to the equation:

$$w^{\prime\prime}-x*w=0$$

It is linearly independent to the Airy Bi function represented by the Bi symbol in this Content Dictionary and is specifically given by:

$$Ai(x)=Ai(0)~f(z)-(-Ai^\prime (0))~g(z)$$

where:

$$f(z)=\sum_{k=0}^\infty 3^k{\left (\frac{1}{3}\right )}_k \frac{z^{3k}}{(3k)!}$$

and:

$$g(z)=\sum_{k=0}^\infty 3^k{\left (\frac{2}{3}\right )}_k \frac{z^{3k+1}}{(3k+1)!}$$

Signatures:
sts


[Next: Bi] [Last: Bi2] [Top]

Bi

Description:

The symbol Bi defines the unary Airy Bi function. This is defined in Abramivitz and Stegun 10.4.1 and is a solution to the equation:

$$w^{\prime\prime}-x*w=0$$

It is linearly independant to the Airy Ai function represented by the Ai symbol in this Content Dictionary and is specifically given by:

$$Bi(x)=\sqrt{3}(Bi(0)~f(z)+(-Bi^\prime (0))~g(z))$$

where:

$$f(z)=\sum_{k=0}^\infty 3^k{\left (\frac{1}{3}\right )}_k \frac{z^{3k}}{(3k)!}$$

and:

$$g(z)=\sum_{k=0}^\infty 3^k{\left (\frac{2}{3}\right )}_k \frac{z^{3k+1}}{(3k+1)!}$$

Signatures:
sts


[Next: Ai2] [Previous: Ai] [Top]

Ai2

Description:

The symbol Ai2 takes two arguments, it represents derivatives of the Airy Ai function. The symbol Ai2(n,z) represents the n'th derivative of Ai(z).

Formal Mathematical property (FMP):
Ai ( z ) = Ai2 ( 0 , z )
Formal Mathematical property (FMP):
( d d z ( Ai2 ( n , z ) ) ) ( z ) = Ai2 ( n + 1 , z )
Signatures:
sts


[Next: Bi2] [Previous: Bi] [Top]

Bi2

Description:

The symbol Bi2 takes two arguments, it represents derivatives of the Airy Bi function. The symbol Bi2(n,z) represents the n'th derivative of Bi(z).

Formal Mathematical property (FMP):
Bi ( z ) = Bi2 ( 0 , z )
Formal Mathematical property (FMP):
( d d z ( Bi2 ( n , z ) ) ) ( z ) = Bi2 ( n + 1 , z )
Signatures:
sts


[First: Ai] [Previous: Ai2] [Top]