[R] Empty Set In a Set

[Jason Q. McClintic]

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Dear List:

I'm looking for a form of the empty set such that if ES is said
representation,

~    ES %in% c(1,2,3)

evaluates to TRUE.

Thank you in advance for your assistance.

Sincerely,

Jason Q. McClintic
- --
Jason Q McClintic
UST MB 1945
2115 Summit Avenue
St. Paul, MN 55105
jqmcclintic at stthomas.edu
mccl0219 at tc.umn.edu

"It is insufficient to protect ourselves with laws, we must protect
ourselves with mathematics."--Bruce Schneier
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