Pith Number

pith:W335OUQW

pith:2009:W335OUQWIFHPM4ATWYAWUOSLMZ

not attested not anchored not stored refs pending

Massive gravity from Dirichlet boundary conditions

Claudia de Rham

arxiv:0910.5474 v2 · 2009-10-28 · hep-th · astro-ph.CO · 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{W335OUQWIFHPM4ATWYAWUOSLMZ}

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	2026-07-04T17:28:12.219398Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b6f7d75216414ef67013b6016a3a4b666df691fd6f4259379533d33f706f23c8

Aliases

arxiv: 0910.5474 · arxiv_version: 0910.5474v2 · doi: 10.48550/arxiv.0910.5474 · pith_short_12: W335OUQWIFHP · pith_short_16: W335OUQWIFHPM4AT · pith_short_8: W335OUQW

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/W335OUQWIFHPM4ATWYAWUOSLMZ \
  | 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: b6f7d75216414ef67013b6016a3a4b666df691fd6f4259379533d33f706f23c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f638c372639dc9094dc6c633f8a99f8e92de5bf9d14d48f70e1fc94c3f49170",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-10-28T20:00:04Z",
    "title_canon_sha256": "2886e53476a054c95e61a20023bf5120ace8893a1213dc0bf7bbf937295c6b76"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.5474",
    "kind": "arxiv",
    "version": 2
  }
}