Pith Number

pith:W2DA62BX

pith:2009:W2DA62BXYKIPZUS6JPLCZ3DCL3

not attested not anchored not stored refs pending

A discrete nonetheless remarkable brick in de Sitter: the "massless minimally coupled field"

Ahmed Youssef (APC), Jean-Pierre Gazeau (APC)

arxiv:0901.1955 v1 · 2009-01-14 · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W2DA62BXYKIPZUS6JPLCZ3DCL3}

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	2026-05-18T02:35:06.507478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6860f6837c290fcd25e4bd62cec625edc2c3a2424aa4c226b05e74885bf64a2

Aliases

arxiv: 0901.1955 · arxiv_version: 0901.1955v1 · doi: 10.48550/arxiv.0901.1955 · pith_short_12: W2DA62BXYKIP · pith_short_16: W2DA62BXYKIPZUS6 · pith_short_8: W2DA62BX

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/W2DA62BXYKIPZUS6JPLCZ3DCL3 \
  | 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: b6860f6837c290fcd25e4bd62cec625edc2c3a2424aa4c226b05e74885bf64a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eae0a0fd24d9070e759a36fe06416afa10d7425f6f08d2322f8b0104113cfc5c",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-01-14T09:05:27Z",
    "title_canon_sha256": "8d021da2fb4984e7ce49acffb5d888e9772a9c5b74181426ebcf0cb9d1b92a84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1955",
    "kind": "arxiv",
    "version": 1
  }
}