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## Main Question or Discussion Point

Hello.

I am taking a fundamentals of electromagnetics.

There are couple of formulars I have been using without understanding the concepts.

[tex]\nabla[/tex] [tex]\cdot[/tex] B = 0

[tex]\nabla[/tex] X E = 0 (curl free)

In those cases, what do dot and cross product mean?

Thanks.

I am taking a fundamentals of electromagnetics.

There are couple of formulars I have been using without understanding the concepts.

[tex]\nabla[/tex] [tex]\cdot[/tex] B = 0

[tex]\nabla[/tex] X E = 0 (curl free)

In those cases, what do dot and cross product mean?

Thanks.