Lucky's 1965 Bell Labs equalizer paper cites no Widrow-Hoff work in its four-entry bibliography

The reference list of R. W. Lucky, "Automatic Equalization for Digital Communication," Bell System Technical Journal 44(4), April 1965, pp. 547–588 — the paper behind claim-lucky-1965-adaptive-equalizer-steepest-descent-transversal-filter — contains exactly four entries: "1. Blumlein, A. D., British Patent No. 517516[.] 2. Kallman, Heinze E., Transversal Filters, Proc. IRE, 28, July, 1940. 3. Kac, M., Random Walk and the Theory of Brownian Motion... 4. Nyquist, H., Certain Topics in Telegraph Transmission Theory, Trans. AIEE[.]" None is authored by Bernard Widrow or Ted Hoff, and none is the 1960 WESCON paper "Adaptive Switching Circuits" that introduced the LMS algorithm.

This was checked directly against the primary document — the same archive.org OCR extraction, matching the sha256 hash already recorded in the vault's audit trail for this paper — not inferred from a secondary summary or abstract. The list is short enough (four entries) to read exhaustively rather than sample, which puts this finding on the stronger end of the vault's recurring negative-citation pattern (moc-argument-from-silence): compare claim-brooks-1991-does-not-cite-dreyfus (15-entry list, exhaustive) and claim-griewank-2012-does-not-mention-amari (full-text scan, zero hits), both graded strong for the same reason.

The finding is one leg of the evidence toward question-lucky-widrow-adaptive-filter-mutual-awareness. On its own it is suggestive, not dispositive: a missing citation shows Lucky did not cite Widrow-Hoff, not that he did not know of it — the two men's work appeared in different venues (WESCON conference proceedings vs. Bell System Technical Journal), and citation practice across such a boundary was thin in 1965.