MathGroup Archive 1996

[Date Index] [Thread Index] [Author Index]

Search the Archive

How to think about Map[ ] ?

  • To: mathgroup at
  • Subject: [mg4662] How to think about Map[ ] ?
  • From: siegman at (AES)
  • Date: Thu, 22 Aug 1996 03:55:15 -0400
  • Organization: Stanford University
  • Sender: owner-wri-mathgroup at

I can understand that  

   Map[f,{a,b,c}] --> {f[a], f[b], f[c]}

But would someone want to give a little tutorial on how to understand 
the (what seem to me) bizarre results I get when I try various
combinations like

   Map[f, a + b + c]

   Map[f, a + b - c]

   Map[f, a * b * c]

   Map[f, a / b / c]

and other more complex forms.  (I'm particularly confused by the
difference between the * * and the / / cases.  I'm not acquainted 
with LISP, and have never encountered any other form of mathematics 
that operates as  Map  seems to.)



  • Prev by Date: Re: mm as a calc tutor????
  • Next by Date: Re: Postfix (//) with Options?
  • Previous by thread: Re: 13 is not prime!
  • Next by thread: Re: How to think about Map[ ] ?