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Imposing a value for LeafCount

• To: mathgroup at smc.vnet.net
• Subject: [mg61187] Imposing a value for LeafCount
• From: kalymereau at yahoo.fr
• Date: Wed, 12 Oct 2005 01:42:16 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Dear MathGroup

I have a complicated expression in which appears a symbol of the form
f[i] where i is an integer (i.e. f[1], f[2] ... are  found in the full
expression).

When I LeafCount the full expression I want that each f[i] is
considered as a single symbol with LeafCount=1. So I have defined

LeafCount[f[i_Integer]] ^:= 1

Then of course LeafCount[f[1]]=1 as I want, but LeafCount[2+f[1]] is 4
instead of 3 (e.g. LeafCount[2+a]=3). This is because LeafCount[2+f[1]]
is not of the form LeafCount[f[i_Integer]], so that the above
definition does not apply.

How can I force LeafCount to consider that each f[i] has a LeafCount=1
even in subexpressions ?

Thanks

• Follow-Ups:
  • Re: Imposing a value for LeafCount
    • From: Andrzej Kozlowski <andrzej@yhc.att.ne.jp>