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On that note, I'm also unfamiliar with this \ operator notation which is used without explanation. X ← X \ {ai}
by imglorp 2y ago
On that note, I'm also unfamiliar with this \ operator notation which is used without explanation.
X ← X \ {ai}
- jtanderson 2y agoThat is conventional set subtraction notation. "Assign to X the same set minus all elements of the set {a_i}". One example source, but it is pretty common in general: http://www.mathwords.com/s/set_subtraction.htm http://www.mathwords.com/s/set_subtraction.htm
- rocqua 2y agoSet difference. Set X becomes X without element ai. This is the case whether ai was in the set X before the step was taken.