fXOR: Compact Technical Specification

This document specifies fXOR, a deterministic reduction operator mapping integer-valued inputs to a bounded cyclic state space. The operator is evaluated solely by measurable behavior, with a minimal reproducible method demonstrating scale invariance and robustness to additive noise relative to a linear magnitude baseline. No symbolic, metaphysical, or physical interpretation is implied. This technical note documents a minimal, reproducible procedure for evaluating measurable properties of the fXOR operator. It is provided for explanatory and validation purposes only. It does not grant rights to implement, reproduce, or claim authorship of the fXOR framework itself.