(Untitled)

[tomtomtomtomtom]

Have you ever done any analysis on the functionK = -4/φ4 (φΔφ - |∇φ|2),
where ∇φ and Δφ are the gradient and Laplacian of φ: Rd → R, respectively?

(Motivation: if φ is a conformal change of the flat Euclidean metric, then K is the new scalar curvature)

Comments

[forvrkate]

No, I have not.

[carte]

all the time

[vyvyanbasterd]

pretty much only when i don't want to get laid

[ericfish]

Dumb question from a business major:
Is is necessary to put the absolute value || around the upside-down triangle squiggle since it's being squared?

And what is an upside-down triangle? Reverse delta?

And what's with the squiggle? Is it greek? Upsilon? It looks like a p. Pupsilon?

Where do we go from here?

[kellenolszewski]

coincidentally no