Let U an open set in Rn, I define the fractional operator Δs with s depending on x∈U:
Δs=limn⊕iΔsi(n)=⊕x∈UΔs(x)
where Δsi(n) is the fractional Laplacian on a hypercube of diameter 1/n, with fraction, an approximation si(n) of s(x) on the hypercube.
Can we use of the fractional Laplacian operator with s depending on x?