Definition:Curl Operator/Historical Note

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Historical Note on Curl Operator

During the course of development of vector analysis, various notations for the curl operator were introduced, as follows:

Symbol Used by
$\nabla \times$ or $\curl$ Josiah Willard Gibbs and Edwin Bidwell Wilson
$\curl$ Oliver Heaviside
Max Abraham
$\operatorname {rot}$ Vladimir Sergeyevitch Ignatowski
Hendrik Antoon Lorentz
Cesare Burali-Forti and Roberto Marcolongo