Pith Number

pith:LLUDSFBF

pith:2013:LLUDSFBF3IEUYVCRR6LZGMBZ67

not attested not anchored not stored refs pending

Model Error in Data Assimilation

John Harlim

arxiv:1311.3579 v5 · 2013-11-14 · math.DS · physics.comp-ph

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

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	2026-05-18T01:37:30.028891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ae8391425da094c54518f97933039f7e1b9a5f22bf6adcceea07cb3eb2f2531

Aliases

arxiv: 1311.3579 · arxiv_version: 1311.3579v5 · doi: 10.48550/arxiv.1311.3579 · pith_short_12: LLUDSFBF3IEU · pith_short_16: LLUDSFBF3IEUYVCR · pith_short_8: LLUDSFBF

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/LLUDSFBF3IEUYVCRR6LZGMBZ67 \
  | 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: 5ae8391425da094c54518f97933039f7e1b9a5f22bf6adcceea07cb3eb2f2531

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4ee8e511b17b65707fc7ef5a1a002da2887a85fbb3a76e329e285c60c1070b0",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2013-11-14T17:05:47Z",
    "title_canon_sha256": "05591c9e06c2ab7144d246988907b0ca196240eafd44e8efb6b798acac481ec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3579",
    "kind": "arxiv",
    "version": 5
  }
}