Orientation and abstract

Technical Companion: Approximation and Accounting for Quantum Sources

Jeremy Rodgers Independent Researcher www.everythingequation.com

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27 October 2026

Abstract

This companion preserves alternate exact encodings, finite-record approximation, output-specific bath approximation and causal resource accounting. Exact minima must be used only with their declared tasks. Historical feasible constructions remain valid but are superseded as best known memory intervals or channel costs where explicitly noted.

This companion develops approximation and resource-accounting results within Shadow Theory’s pre-existing source–readout programme [10]. The stationary classical completion used for comparison is established in Rodgers [9].