“…It's well known that the fractional Laplacian can be defined by for , where denotes a Cauchy principal value, is the Schwartz space of rapidly decaying function, denotes an open ball of radius centred at and the normalization constant (see e.g. [5, 17, 24] and reference therein). In fact, there are applications of operator in some areas such as fractional quantum mechanics, physics and chemistry, obstacle problems, optimization and finance, conformal geometry and minimal surfaces, please see [1, 2, 12, 13, 15, 18] and the references therein for more details.…”