“…Recently, heat kernel estimates for Markov processes with jumps have been extensively studied due to their importance in theory and applications (see [8,10,3,12,14,16,19,20,21,24,22,23,25,26,29,30,32,33,35,36,38,39,40,41,44,45,46,47,49,51,52,55,56] and references therein). In [21], the authors obtained heat kernel estimates for pure jump symmetric Markov processes on metric measure space (M, d, µ), where M is a locally compact separable metric measure space with metric d and a positive Radon measure µ satisfying volume doubling property.…”