Lie algebras & nonassociative algebra
The linearization of continuous symmetry: vector spaces with a bracket [x,y].
Founded: 1874 — Sophus Lie's foundational work
The claim
No credible dismissal found. Complaints targeted comprehension difficulty (“Lie's clumsy formalism… rendered his theories obscure”), not value — Lie himself confidently predicted future recognition.
What happened
The Eightfold Way (1961) — Gell-Mann & Ne'eman's su(3) representation theory organized hadrons and predicted the Ω⁻ baryon, confirmed at Brookhaven in 1964.
87 years — founding (1874) to the Eightfold Way (1961)
Verdict: Never dismissed, applied anyway.
Confidence: medium-high.