Pith Number

pith:AMFHRQB2

pith:2014:AMFHRQB2PSOD3WLUAOUGD5QBEP

not attested not anchored not stored refs pending

Quantum theory of the Bianchi II model

Herv\'e Bergeron, Orest Hrycyna, Przemys{\l}aw Ma{\l}kiewicz, W{\l}odzimierz Piechocki

arxiv:1405.7887 v2 · 2014-05-30 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMFHRQB2PSOD3WLUAOUGD5QBEP}

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	2026-05-18T01:43:04.591933Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

030a78c03a7c9c3dd97403a861f60123f3e84524b1088123d5df3f9384b32bfa

Aliases

arxiv: 1405.7887 · arxiv_version: 1405.7887v2 · doi: 10.48550/arxiv.1405.7887 · pith_short_12: AMFHRQB2PSOD · pith_short_16: AMFHRQB2PSOD3WLU · pith_short_8: AMFHRQB2

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/AMFHRQB2PSOD3WLUAOUGD5QBEP \
  | 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: 030a78c03a7c9c3dd97403a861f60123f3e84524b1088123d5df3f9384b32bfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5aee3e2ad16cd539983a6d4a9cf52d33a342437c7a8c4232440ea0d6ce175325",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-05-30T15:16:42Z",
    "title_canon_sha256": "4e207ef42b26e00f43263983ef19fdcfda5655ed45944c409e44815c665056e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.7887",
    "kind": "arxiv",
    "version": 2
  }
}