perplexed by blank sequence in pattern replacement

*To*: mathgroup at smc.vnet.net*Subject*: [mg68674] perplexed by blank sequence in pattern replacement*From*: "Blake" <laing at ou.edu>*Date*: Wed, 16 Aug 2006 03:36:01 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear MathGroup: I have been blithely using blank sequences in pattern matching for some time. In persuit of a bug in a package of mine, I was quite alarmed to find that I don't really understand how to use the blank sequence, as expressed in the following simplified example: In[1]:=Replace[a*b*c,Times[mysequence__]:>{mysequence}] Out[1]={a b c} I expected Out[1]={a,b,c}, from a naieve reading of the full form of a*b*c In[2]:=FullForm[a*b*c] Out[2]//FullForm=Times[a,b,c] Will someone PLEASE tell me why In[1] does not yield the results I expected? (I can readily use a work-around, what I am concerned with is a correct understanding of pattern matching). Blake Laing thesis slave University of Oklahoma

**Follow-Ups**:**Re: perplexed by blank sequence in pattern replacement***From:*Andrzej Kozlowski <akoz@mimuw.edu.pl>

**Re: perplexed by blank sequence in pattern replacement***From:*Sseziwa Mukasa <mukasa@jeol.com>