A unified framework shows that flat-regularized superdeterminants of characteristic operators stay constant along inner variations of generalized codifferentials, covering local constancy of analytic torsion and of Ruelle zeta at zero.
An extension of a theorem by Che eger and M¨ uller
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On the local constancy of regularized superdeterminants along special families of differential operators
A unified framework shows that flat-regularized superdeterminants of characteristic operators stay constant along inner variations of generalized codifferentials, covering local constancy of analytic torsion and of Ruelle zeta at zero.