Declarations

. No specific funding is declared.

interests. None declared.

. The present work is a mathematical analysis and involves no new human or animal experimentation.

availability. No new empirical dataset is used. The supplied landmark excerpts are documentary materials; their complete manuscripts and any physical correspondence require separate source and empirical audits.

provenance. The manuscript contains analytic proofs and declared comparison models. It does not report newly executed simulations, experimental reproduction, machine-checked proofs, or an executed {} compilation. The source is designed for pdflatex; two compilation passes resolve internal references.