Andreas Griewank
Mathematician central to automatic differentiation since the late 1980s; credited by Trefethen with "facilitating the rebirth" of the reverse mode. Author of the vault's Tier-1 anchor for backpropagation's origins: "Who Invented the Reverse Mode of Differentiation?" (Documenta Mathematica 2012, read directly 2026-07-06 after three sessions of dead mirrors) and the 2014 Pesquisa Operacional follow-up (Table 5). His first-person testimony — he phoned Linnainmaa "from Argonne in the late eighties" — is the vault's best primary evidence on the reception gap.
References
- claim-linnainmaa-copenhagen-anecdote · claim-linnainmaa-reverse-mode-single-pass (verified_by) · claim-linnainmaa-priority-not-paternity (revisit 2026-07-06)
- Captures: 2026-07-06-did-linnainmaa-originate (direct read), 2026-07-01-does-table-5 (direct read)