Pith Number

pith:XJVR5PQS

pith:2010:XJVR5PQSB5YCUU7SP6DEJ46AWI

not attested not anchored not stored refs pending

Ultrastatic spacetimes

Sebastiano Sonego

arxiv:1004.1714 v2 · 2010-04-10 · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XJVR5PQSB5YCUU7SP6DEJ46AWI}

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	2026-05-18T04:24:54.643723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba6b1ebe120f702a53f27f8644f3c0b20ab911dc9a6d6476e023753d29a8178f

Aliases

arxiv: 1004.1714 · arxiv_version: 1004.1714v2 · doi: 10.48550/arxiv.1004.1714 · pith_short_12: XJVR5PQSB5YC · pith_short_16: XJVR5PQSB5YCUU7S · pith_short_8: XJVR5PQS

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/XJVR5PQSB5YCUU7SP6DEJ46AWI \
  | 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: ba6b1ebe120f702a53f27f8644f3c0b20ab911dc9a6d6476e023753d29a8178f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f363b0249724482d4828b6e0c0e9261dd655476a30b27d007d7742d87a1777cc",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2010-04-10T14:27:25Z",
    "title_canon_sha256": "d9766643128ac05bbbf47b91935c11c8c15f5bd2281be79381d302a4b051583d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.1714",
    "kind": "arxiv",
    "version": 2
  }
}