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Re: Simplifying Bessel Functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg92515] Re: [mg92474] Simplifying Bessel Functions
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Thu, 2 Oct 2008 04:36:37 -0400 (EDT)
  • Reply-to: hanlonr at cox.net

ruleBessel = {BesselJ[n_Integer, 
     BesselJZero[n_, 
      m_Symbol?
       (Element[#, Integers] && # > 0 &)]] :> 0};

n /: Element[n, Integers] = True;
n /: n > 0 = True;

BesselJ[0, BesselJZero[0, n]] /. ruleBessel

0


Bob Hanlon

---- Aaron Fude <aaronfude at gmail.com> wrote: 

=============
Hi,

What do I need to do to make mathematica recognize the following
expression as zero:

BesselJ[0, BesselJZero[0, n]]

Many thanks in advance,

Aaron



--

Bob Hanlon



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