Definition:Fourier Transform/Also denoted as
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Fourier Transform: Also denoted as
The Fourier transform of $f$ is also often seen denoted by $\hat f$, as this notation has considerable usefulness.
The style of $\FF$ can vary across different sources. $\mathsf{Pr} \infty \mathsf{fWiki}$ uses $\FF$ as standard.
Some sources write $\FF \sqbrk f$ instead of $\map \FF f$.
Some sources omit the brackets altogether, and deploy it as $\FF f$.