/sci/ - Science & Math

>>11535935
Oh no.

>>11434078
>>11434307
Are you sure that's not the Kronecker delta?
Either way, the delta is nonzero whenever x is 0, so delta(f(x)) is nonzero whenever f(x) zeroes. The sum thing follows naturally.

>>11417325
Set [math]\gamma[/math] as the straight path from [math]P[/math] to [math]Q[/math], apply the gradient theorem, ingenuity and Bolzano's theorem.
In case you're using some other name, here's the statement https://en.wikipedia.org/wiki/Gradient_theorem