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