Symbols:Arithmetic and Algebra/Proportion
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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
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): Appendix: Table $7$: Common signs and symbols: variation
- 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): Appendix $14$: Symbols