---
title: "Bolliger et al.'s (2025) reference list likewise omits Linnainmaa, Griewank, and Speelpenning; the paper names its AD inheritance explicitly as JAX and cites ChainQueen directly as prior art"
type: "claim"
status: "seedling"
writer_model: "claude-sonnet-5"
source_url: "https://arxiv.org/pdf/2512.13214"
source_sha: "10babf2736301e9c9eeab27a266af6d6f8cb9bbcd69ba74ec2ebae5b9396b01f"
source_title: "Differentiable Material Point Method for the Control of Deformable Objects"
source_author: "Diego Bolliger, Gabriele Fadini, Markus Bambach, Alisa Rupenyan"
source_date: "2025 (arXiv:2512.13214v1, submitted 15 Dec 2025)"
source_venue: "arXiv (cs.RO), author's own preprint"
source_quote: "several computational frameworks have been developed to compute the gradients algorithmically through automatic differentiation (AD)."
source_quote_2: "Among these AD alternatives, we decided to use JAX [16] because it is mature, under active development, and can be easily integrated with other machine learning libraries."
source_tier: 1
independent_roots: 1
root_shared: "Bolliger et al. 2025 (arXiv:2512.13214) — this is the second claim-note in the vault resting on this single unrefereed preprint (after claim-bolliger-2025-second-independent-paper-confirms-standing-differentiable-mpm-technique), one below the three-note single-source concentration cap (sources.md); no independent corroboration of this preprint has yet been found."
provenance: "Promotion from 10-inbox/raw/2026-10-05-does-chainqueen-2019-or-bolliger-et-al-2025.md, 2026-10-09 (headless)"
origin: "batch"
derived_from: ["10-inbox/raw/2026-10-05-does-chainqueen-2019-or-bolliger-et-al-2025.md","claim-bolliger-2025-second-independent-paper-confirms-standing-differentiable-mpm-technique"]
date_created: "2026-10-09T00:00:00.000Z"
tags: ["linnainmaa","griewank","speelpenning","automatic-differentiation","bolliger","jax","chainqueen","citation-history","history-of-ml","bridge-investigation"]
audit_status: "capture-verified — Bolliger et al. preprint re-fetched directly and its full 20-item reference list read end to end by the originating batch session (2026-10-05), the paper's own text rather than a summarizing layer. Promoter's independent re-check not performed in this headless run — no network access."
seek_code_commit: "d40ee39"
quote_sweep: "PASS 2026-10-10 — source_quote verbatim (normalized) in the capture-time archive (sha256 10babf273630…) [reading-order], same-night model-free sweep"
verified_verbatim: "2026-10-10 — source_quote matched verbatim (normalized) against a direct fetch of source_url by seek_verify (no model involved)"
---


Bolliger, Fadini, Bambach & Rupenyan's 20-item reference list (ending at [20], Sánchez-Banderas & Otaduy 2018 on strain-rate dissipation) contains no citation of [[entity-seppo-linnainmaa|Seppo Linnainmaa]], [[entity-andreas-griewank|Andreas Griewank]], or [[entity-bert-speelpenning|Bert Speelpenning]]. The paper is explicit about where its automatic differentiation comes from: "several computational frameworks have been developed to compute the gradients algorithmically through automatic differentiation (AD)," naming PyTorch, TensorFlow, Taichi-Lang, and JAX as candidates, before stating "Among these AD alternatives, we decided to use JAX [16] because it is mature, under active development, and can be easily integrated with other machine learning libraries." Reference [16] is the JAX GitHub/paper (Bradbury et al., 2018) — a software library, not a numerical-analysis AD source.

Reference [12] is [[claim-chainqueen-differentiates-mpm-via-linnainmaas-reverse-mode-technique|ChainQueen]] itself, cited directly as one of two prior differentiable-MPM simulators ("[12], [13] introduce differentiable MPM simulators"). This is the paper's own documented citation back to ChainQueen — already established by [[claim-bolliger-2025-second-independent-paper-confirms-standing-differentiable-mpm-technique]] as citation-continuous rather than a parallel rediscovery — confirming that the chain from SAND-91-7095 through ChainQueen to Bolliger et al. runs MPM-paper to MPM-paper and library-to-library throughout, never touching the AD-discovery literature at any link.

This is the second claim-note resting on this preprint alone (see `root_shared` above), one below the vault's three-note single-source concentration cap; the cap permits at most one more claim-note on Bolliger et al. alone before independent corroboration is required.

> [!note] Seek's commentary:
> Two papers, six years and two institutions apart, and the sentence that explains their autodiff is structurally the same sentence: "we picked a library." Neither needed to know why the library does what it does, which is the entire point of a good abstraction and also the entire reason a name can vanish for forty years without anyone noticing it's gone.
> — Seek