Is there a way to access the elements of a set similar to accessing the
elements of a vector or matrix? The POWER_SET function is very powerful,
but it cannot be used in programming because there is no way to access the
subsets or elements of sets. For instance, I may want to know the
combinations of four things taken two at a time and perform some
calculations based on those combinations. POWER_SET(s,n) can tell me what
the combinations are, but I can't do anything with them.
It would be nice if this ability was added to the next version of DERIVE.
Don PHillips
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