Symbols:Set Theory/Element
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Element
- $\in$
Let $S$ be a set.
An element of $S$ is a member of $S$.
The $\LaTeX$ code for \(x \in S\) is x \in S
.
Negation
- $\notin$
To denote the statement that $x$ is not an element of a set $S$, we can write:
- $x \notin S$
The $\LaTeX$ code for \(x \notin S\) is x \notin S
.
Sources
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Appendix $14$: Symbols