I used to be annoyed that when I text "fuck" it defaults to "dual", but lately, it's just made functional analysis more interesting to think about.
e.g.: Let X be a set of people. Let X^* be the set of people they've "dualed" (the "dual" space of X). Show that X^** := (X^*)^* contains X.
EDIT: OK, the statement isn't necessarily true unless you
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