Symbols:Arithmetic and Algebra/Proportion

Proportion

$\propto$

Two real variables $x$ and $y$ are proportional if and only if one is a constant multiple of the other:

$\forall x, y \in \R: x \propto y \iff \exists k \in \R, k \ne 0: x = k y$

The $\LaTeX$ code for \(x \propto y\) is x \propto y .

Sources

• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Appendix $14$: Symbols