Pith Number

pith:AXKZ4MFI

pith:2008:AXKZ4MFIFU4PPHMYBKHPSVWV44

not attested not anchored not stored refs pending

Time variation of the electron mass in the early universe and the Barrow-Magueijo model

Claudia G. Sc\'occola, H\'ector Vucetich, Mercedes E. Mosquera, Susana J. Landau

arxiv:0803.0247 v1 · 2008-03-03 · astro-ph · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AXKZ4MFIFU4PPHMYBKHPSVWV44}

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.

Cited by

1 paper in Pith

Towards degeneracy breaking of early universe models

Receipt and verification

First computed	2026-07-04T15:14:38.454987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05d59e30a82d38f79d980a8ef956d5e73b7b26a651f69e3f66e15a1c605cac90

Aliases

arxiv: 0803.0247 · arxiv_version: 0803.0247v1 · doi: 10.48550/arxiv.0803.0247 · pith_short_12: AXKZ4MFIFU4P · pith_short_16: AXKZ4MFIFU4PPHMY · pith_short_8: AXKZ4MFI

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/AXKZ4MFIFU4PPHMYBKHPSVWV44 \
  | 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: 05d59e30a82d38f79d980a8ef956d5e73b7b26a651f69e3f66e15a1c605cac90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5354b752b48dbd3818605fdfc638f712c805769cc0fe9db4bc1c7d47b88de211",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-03-03T14:37:34Z",
    "title_canon_sha256": "648d6b8a502bead35aea4ab489fdb43be72c9d165129c71db0c114db39528171"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.0247",
    "kind": "arxiv",
    "version": 1
  }
}