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Re: The Power Set


Jasvinder,

Needs["DiscreteMath`Combinatorica`"]

ColumnForm[Sort[Subsets[{x1, x2, x3, x4}]]]

Bob Hanlon

In a message dated 6/12/98 8:02:06 AM, jsk97r at ecs.soton.ac.uk wrote:

>Since I am new to Mathematica, I apologise if this question is trivial!!
>I am trying to list all the subsets of a set of variables, ie
>
>I have a set X containing 4 variables X1, X2, X3 and X4 - so what I want
>to do is list all the subsets, so for this case it would be:
>
>X1
>X2
>X3
>X4
>X1,X2
>X1,X3
>X1,X4
>X2,X3
>X2,X4
>X3,X4
>X1,X2,X3
>X1,X2,X4
>X1,X3,X4
>X2,X3,X4
>X1,X2,X3,X4
>
>The problem is as the set becomes larger, there are 2^n possible
>subsets, as such I would like to know if there is a quick way of
>displaying this information in this format.


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