Math Humor { :( , :( } { 😦 } You make me sad. Markus Keel Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related
Brad Froehle September 21, 2004 at 10:43 am I should mention that this arose in analysis when talking about taking the difference of sets when elements could be duplicated. Prof Keel took the opinion that each of the smiley faces is distinct — thus making the problem a non-issue.
Brad Froehle 
I should mention that this arose in analysis when talking about taking the difference of sets when elements could be duplicated. Prof Keel took the opinion that each of the smiley faces is distinct — thus making the problem a non-issue.