Pith Number

pith:3LA5NQTW

pith:2025:3LA5NQTWPM2KGAW363MI52MBWQ

not attested not anchored not stored refs pending

LLM world models are mental: Output layer evidence of brittle world model use in LLM mechanical reasoning

Cole Robertson, Philip Wolff

arxiv:2507.15521 v1 · 2025-07-21 · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3LA5NQTWPM2KGAW363MI52MBWQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T11:40:38.664581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dac1d6c2767b34a302dbf6d88ee981b42f6b5f2b6a39a526fd2f1bcdff8e7ae5

Aliases

arxiv: 2507.15521 · arxiv_version: 2507.15521v1 · doi: 10.48550/arxiv.2507.15521 · pith_short_12: 3LA5NQTWPM2K · pith_short_16: 3LA5NQTWPM2KGAW3 · pith_short_8: 3LA5NQTW

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/3LA5NQTWPM2KGAW363MI52MBWQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: dac1d6c2767b34a302dbf6d88ee981b42f6b5f2b6a39a526fd2f1bcdff8e7ae5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d40898e1b5302fdc6e44c5cbf3a7531e3257d403ee3f28f7029a7b2d81d3c241",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2025-07-21T11:42:03Z",
    "title_canon_sha256": "cb038cca266e1eca84a337de8164397a58f71bcd84891ae79f36ac89e0eecf5e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.15521",
    "kind": "arxiv",
    "version": 1
  }
}