Pith Number

pith:7PGSXOGV

pith:2013:7PGSXOGVQDSO4YIQP5ON7YX535

not attested not anchored not stored refs pending

Inequality between size and angular momentum for bodies

Sergio Dain

arxiv:1305.6645 v2 · 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{7PGSXOGVQDSO4YIQP5ON7YX535}

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	2026-05-18T03:00:12.813633Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fbcd2bb8d580e4ee61107f5cdfe2fddf6b590ac0adf8be90b8fafc2cd9284d94

Aliases

arxiv: 1305.6645 · arxiv_version: 1305.6645v2 · doi: 10.48550/arxiv.1305.6645 · pith_short_12: 7PGSXOGVQDSO · pith_short_16: 7PGSXOGVQDSO4YIQ · pith_short_8: 7PGSXOGV

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/7PGSXOGVQDSO4YIQP5ON7YX535 \
  | 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: fbcd2bb8d580e4ee61107f5cdfe2fddf6b590ac0adf8be90b8fafc2cd9284d94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "852eecadfdab0827b4e6f2bdae59ac21d5ac31a9b07ac5fa46556146b47f1064",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2013-05-28T22:12:18Z",
    "title_canon_sha256": "da727f0dd3be22a2c8ed6c393a1aab85ae45f2b7dcec40e39e0206ecee1388be"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6645",
    "kind": "arxiv",
    "version": 2
  }
}