Pith Number

pith:4SGLV6CR

pith:2013:4SGLV6CRY53WDSCC7QSVMLWFYA

not attested not anchored not stored refs pending

Geometry and topology of complete Lorentz spacetimes of constant curvature

Fanny Kassel, Fran\c{c}ois Gu\'eritaud, Jeffrey Danciger

arxiv:1306.2240 v1 · 2013-06-10 · math.GT · math.DG · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4SGLV6CRY53WDSCC7QSVMLWFYA}

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	2026-05-18T03:21:09.910034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e48cbaf851c77761c842fc25562ec5c02ff14bf7db39bd2ecb40cb3ff5ba782e

Aliases

arxiv: 1306.2240 · arxiv_version: 1306.2240v1 · doi: 10.48550/arxiv.1306.2240 · pith_short_12: 4SGLV6CRY53W · pith_short_16: 4SGLV6CRY53WDSCC · pith_short_8: 4SGLV6CR

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/4SGLV6CRY53WDSCC7QSVMLWFYA \
  | 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: e48cbaf851c77761c842fc25562ec5c02ff14bf7db39bd2ecb40cb3ff5ba782e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4870a86fa271f3a134c3976f7160154714d9e329edcef43397ad274f09795796",
    "cross_cats_sorted": [
      "math.DG",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2013-06-10T16:14:27Z",
    "title_canon_sha256": "92471400e20c79438e7b6000afa369394e36aa332a5f1725dec640a3731de448"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2240",
    "kind": "arxiv",
    "version": 1
  }
}