Pith Number

pith:YPS6WFBM

pith:2026:YPS6WFBMEJEHKR2VLC6VDJFFSB

not attested not anchored not stored refs pending

Inverting the Bellman Equation: From $Q$-Values to World Models

Alexander D. Goldie, Alistair Letcher, Jakob N. Foerster, Jonathan Richens, Mattie Fellows, Oliver Richardson

arxiv:2606.21173 v1 · 2026-06-19 · cs.LG · 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{YPS6WFBMEJEHKR2VLC6VDJFFSB}

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	2026-06-23T01:12:32.403498Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3e5eb142c224875475558bd51a4a59052164e3c3ee226b3f042182e9b68daca

Aliases

arxiv: 2606.21173 · arxiv_version: 2606.21173v1 · doi: 10.48550/arxiv.2606.21173 · pith_short_12: YPS6WFBMEJEH · pith_short_16: YPS6WFBMEJEHKR2V · pith_short_8: YPS6WFBM

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/YPS6WFBMEJEHKR2VLC6VDJFFSB \
  | 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: c3e5eb142c224875475558bd51a4a59052164e3c3ee226b3f042182e9b68daca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9853fe1665fdd4e54fc073f2f056fb63af8819da2c51472f5ad1fb5b6e27b7c7",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-19T07:26:14Z",
    "title_canon_sha256": "bc58b51a5c6c4f9a691198a5e2471146326acd630bf12df7f773090ffbad97d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21173",
    "kind": "arxiv",
    "version": 1
  }
}