Pith Number

pith:A26H7NF5

pith:2012:A26H7NF5TSHMRJSADOA5DPAP3K

not attested not anchored not stored refs pending

An Approximate Newton Method for Markov Decision Processes

David Barber, Thomas Furmston

arxiv:1204.1227 v4 · 2012-04-05 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A26H7NF5TSHMRJSADOA5DPAP3K}

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	2026-05-18T01:35:57.716917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06bc7fb4bd9c8ec8a6401b81d1bc0fdaad32c627d92fa8c8fb504092259b2719

Aliases

arxiv: 1204.1227 · arxiv_version: 1204.1227v4 · doi: 10.48550/arxiv.1204.1227 · pith_short_12: A26H7NF5TSHM · pith_short_16: A26H7NF5TSHMRJSA · pith_short_8: A26H7NF5

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/A26H7NF5TSHMRJSADOA5DPAP3K \
  | 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: 06bc7fb4bd9c8ec8a6401b81d1bc0fdaad32c627d92fa8c8fb504092259b2719

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc488bd8f8fe4f70439f1026bfcec0caf5afdb29c3e9296743cfd86543cb7ec5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2012-04-05T13:44:29Z",
    "title_canon_sha256": "4e4a7071df5f39208d051e80e6c0bff0d60b6b9ede70ef7e45c1200337f0ade2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.1227",
    "kind": "arxiv",
    "version": 4
  }
}