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Re: (2/3)[[1]]

• To: mathgroup at smc.vnet.net
• Subject: [mg96407] Re: (2/3)[[1]]
• From: David Bailey <dave at removedbailey.co.uk>
• Date: Fri, 13 Feb 2009 03:41:00 -0500 (EST)
• References: <gn11e8$7vn$1@smc.vnet.net>

obott0 at gmail.com wrote:
> I'm not sure if this has been asked before, but why can't Part be used
> with Rational?
> 
> i.e. (2/3)[[1]]
> 
> Thanks.
> 
Internally, Mathematica considers rational numbers to be atomic objects 
- they only print in a way that makes them look otherwise. You will find 
that Complex[2,3] behaves in the same way for the same reason.

David Bailey
http://www.dbaileyconsultancy.co.uk

• Follow-Ups:
  • Re: Re: (2/3)[[1]]
    • From: Murray Eisenberg <murray@math.umass.edu>