please go to "Wolfram Alpha" website, (google the term) and copy paste the following formula:(adsbygoogle = window.adsbygoogle || []).push({});

curl ( (-y/(x^2+y^2), x/(x^2+y^2), 0)

you can see the result is zero

I think that's the expression of H surrounding a current. what am I missing?

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# Maxwell's 4th equation. BUT, curl of H is zero everywhere

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