Quadratic Estimates for Perturbed Dirac Type Operators on Doubling Measure Metric Spaces
نویسنده
چکیده
We consider perturbations of Dirac type operators on complete, connected metric spaces equipped with a doubling measure. Under a suitable set of assumptions, we prove quadratic estimates for such operators and hence deduce that these operators have a bounded functional calculus. In particular, we deduce a Kato square root type estimate.
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