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I think you might have gotten your symbols mixed up a litte. From what I understand, just \nabla(f) describes the gradient of a function f -- meaning all the f
by xkevio 4y ago
I think you might have gotten your symbols mixed up a litte.
From what I understand, just \nabla(f) describes the gradient of a function f -- meaning all the first order partial derivatives (of a certain point) in a vector.
\nabla * f describes the divergence of the function f -- meaning a scalar field of the quantity of the vector field's sources at each point.
\nabla * \nabla(f), divergence of gradient, then describes the Laplace operator.
Also written as \nabla^2(f) or \Delta(f) -- note that it's an uppercase delta.
- soVeryTired 4y agoYou’re absolutely right - how embarrassing! It’s been a few years since I’ve touched this stuff.
- jesuslop 4y agoGlitch apart, thanks for expanding, that was what I meant.
- qorrect 4y agoHow can I get these \nabla s to render, is there a plugin or something ?
- xkevio 4y agoHN doesn't support LaTeX in comments sadly, so I am just writing it out as you would before rendering it with LaTeX. Maybe there are add-ons that detect valid LaTeX math symbols and convert them whenever possible but as-is you can't get it to render within the comments.
- soVeryTired 4y agoYeah, it’s a brain-render unfortunately. Once you’ve written enough latex you work pretty comfortably with just the text for communication.