Pith Number

pith:BIVU3HPK

pith:2013:BIVU3HPKWL3D4KL4ZVWHKIDBAI

not attested not anchored not stored refs pending

Application of the 3-space approach to the Bianchi II cosmological model

Lau Loi So

arxiv:1305.6549 v1 · 2013-05-28 · 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{BIVU3HPKWL3D4KL4ZVWHKIDBAI}

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	2026-05-18T03:24:40.478302Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0a2b4d9deab2f63e297ccd6c752061022db32c33aee74ebe5588bd0776981268

Aliases

arxiv: 1305.6549 · arxiv_version: 1305.6549v1 · doi: 10.48550/arxiv.1305.6549 · pith_short_12: BIVU3HPKWL3D · pith_short_16: BIVU3HPKWL3D4KL4 · pith_short_8: BIVU3HPK

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/BIVU3HPKWL3D4KL4ZVWHKIDBAI \
  | 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: 0a2b4d9deab2f63e297ccd6c752061022db32c33aee74ebe5588bd0776981268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2257d12a5664215d73d9e59795ae197b16203ff11e3b5485580cbf3a2b33b95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-05-28T16:15:26Z",
    "title_canon_sha256": "9408e3af9f55aa6e0dcb74c904283e220d603c2f3c83f36fdb2b6de793aee2d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6549",
    "kind": "arxiv",
    "version": 1
  }
}