Pith Number

pith:BCLYYDWZ

pith:2002:BCLYYDWZUI55OSP7FW5YDVWBUR

not attested not anchored not stored refs pending

Dynamical System Approach to Cosmological Models with a Varying Speed of Light

Adam Krawiec, Marek Szydlowski

arxiv:gr-qc/0212068 v2 · 2002-12-16 · 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{BCLYYDWZUI55OSP7FW5YDVWBUR}

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	2026-07-04T15:13:04.160349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08978c0ed9a23bd749ff2dbb81d6c1a459c7236f763587c34a559509f55944c2

Aliases

arxiv: gr-qc/0212068 · arxiv_version: gr-qc/0212068v2 · doi: 10.48550/arxiv.gr-qc/0212068 · pith_short_12: BCLYYDWZUI55 · pith_short_16: BCLYYDWZUI55OSP7 · pith_short_8: BCLYYDWZ

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/BCLYYDWZUI55OSP7FW5YDVWBUR \
  | 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: 08978c0ed9a23bd749ff2dbb81d6c1a459c7236f763587c34a559509f55944c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dedc100b4e235202e201450ff551fe77d06f78d2d471b69c3c6ad8ede85b4cf",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-12-16T15:05:38Z",
    "title_canon_sha256": "099c8772c62b5545f7734721570ed31044d0899d307ae7c9e599c8b20dfa7ef6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0212068",
    "kind": "arxiv",
    "version": 2
  }
}