Symbols:General/Negation
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Negation
- $\not =, \ \not>, \ \not<, \ \not \ge, \ \not \le, \ \not \in, \ \not \exists, \ \not \subseteq, \ \not \subset, \ \not \supseteq, \ \not \supset$
The above symbols all mean the opposite of the non struck through version of the symbol.
For example, $x \not\in S$ means that $x$ is not an element of $S$.
The slash $/$ through a symbol can be used to reverse the meaning of essentially any mathematical symbol (especially relations), although it is used most frequently with those listed above.
The $\LaTeX$ code for negation is \not
followed by the code for whatever symbol you want to negate.
For example, \not \in
will render $\not \in$.
Note that several of the above relations also have their own $\LaTeX$ commands for their negations, for example \ne
or \neq
for \not =
, and \notin
for \not \in
.
Also see
See:
for the definitions of the symbols above.
Sources
- 1971: Patrick J. Murphy and Albert F. Kempf: The New Mathematics Made Simple (2nd ed.) ... (previous) ... (next): Chapter $1$: Sets