Harmonic Functions is a scalar-valued function 𝑓(𝑥1, …, 𝑥𝑛) whose Laplacian is equal to zero: 𝛥f=∑indxi2d2f=0 intuitively, given 𝑓 and a point 𝑥; the average of all points within a distance/radius from 𝑥 is also 𝑥 Resources https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/laplacian/v/harmonic-functions