Thanks to Duncan and all who responded.
I agree that the algebraic set rules do not allow for indistinguishable
elements; I must have been deeply immersed in quantum fermions when I
wrote strictly rather than less in front of algebraic style.
I'll clean up my code (so that intersect()
As a mathematician by training (and a former practicing mathematician,
both of which qualifications I rarely feel compelled to pull out of the
closet), I have to agree with Michael's challenge to the original
assertion about the mathematical concept of sets.
Sets are collections of distinct
On 14-02-06 8:31 PM, Carl Witthoft wrote:
First, let me apologize in advance if this is the wrong place to submit
a suggestion for a change to functions in the base-R package. It never
really occurred to me that I'd have an idea worthy of such a change.
My idea is to provide an upgrade to all
First, let me apologize in advance if this is the wrong place to submit
a suggestion for a change to functions in the base-R package. It never
really occurred to me that I'd have an idea worthy of such a change.
My idea is to provide an upgrade to all the sets tools (intersect,
union,
