Remarks on nonlocal trace expansion coefficients
Gerd Grubb
Abstract
In a recent work, Paycha and Scott establish formulas for all the Laurent coefficients of Tr(AP-s) at the possible poles. In particular, they show a formula for the zero'th coefficient at s=0, in terms of two functions generalizing, respectively, the Kontsevich-Vishik canonical trace density, and the Wodzicki-Guillemin noncommutative residue density of an associated operator. The purpose of this note is to provide a proof of that formula relying entirely on resolvent techniques (for the sake of possible generalizations to situations where powers are not an easy tool). - We also give some corrections to transition formulas used in our earlier works.
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