Re: Re: how to delete duplicate items in the same list

*To*: mathgroup at smc.vnet.net*Subject*: [mg45594] Re: [mg45576] Re: how to delete duplicate items in the same list*From*: Selwyn Hollis <sh2.7183 at misspelled.erthlink.net>*Date*: Fri, 16 Jan 2004 06:05:09 -0500 (EST)*References*: <bto1uf$2ka$1@smc.vnet.net> <bu0cjl$ah9$1@smc.vnet.net> <200401140626.BAA19761@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Union applied to a single list essentially "converts" the list to a set, thus removing duplicate elements? ----- Selwyn Hollis http://www.math.armstrong.edu/faculty/hollis (edit reply-to to reply) On Jan 14, 2004, at 1:26 AM, AES/newspost wrote: >>> I can't find a way to make sure all items in the same list are >>> unique. Can >>> anybody help me out? Thanks a lot! > >> Union[a]==a > > > Can anyone explain why "Union" means what it does? -- or at least a > mental crutch to help me remember that Union is the command that does > this? > > (Doesn't seem an obvious name for the function involved, though I > suppose I could try to think "Unique" ---> "Union") >

**References**:**Re: how to delete duplicate items in the same list***From:*AES/newspost <siegman@stanford.edu>