Symbols:Symbolic Logic/Deprecated Symbols/Ampersand

Deprecated Symbol for Conjunction

$\&$

$P \mathop \& Q$ means $P$ is true and $Q$ is true.

An alternative to $P \land Q$, which is what is usually used by logicians.

The $\LaTeX$ code for \(P \mathop \& Q\) is P \mathop \& Q  or P \mathop \And Q.

Linguistic Note

The word ampersand is an elision, which evolved via an interesting linguistic process from and per se and.

Its literal meaning is: and (the symbol $\&$) intrinsically (is the word) and.

The symbol $\&$ itself evolved from the Latin et (for and).

Sources

• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Appendix: Table $7$: Common signs and symbols: and