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Is 'curl E' a standard notation nowadays? When I was at uni we used 'rot E'.

Wiki says that curl is standard in North America, while rot is common in "the rest of the world, particularly in 20th century scientific literature". As a North American I can confirm that I was always taught curl and only saw rot in older books.

That said ∇× is what I've seen most commonly overall.

Scotland we used curl. I never heard of rot. Although Maxwell was Scottish, the vector analysis notation was invented later.

In England we also seem to use curl. I’ve similarly never heard of rot.

Ditto 1980's era Australian physics and engineering courses.

Throw in a right hand thumbs up for "direction" of curl (fingers indicate rotation, orthogonal thumb direction is orientation) and other results about paths having to have a zero rotation between places with opposing rotation, etc.

— Hey, what's up?

— Forward cross left!

I’m from Czechia and we mostly use rot, sometimes ∇×.

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