Pith Number

pith:COUJYEDC

pith:2008:COUJYEDCZM7YM7C45IQK4NK2ZO

not attested not anchored not stored refs pending

Prescribing Gauss curvature of surfaces in 3-dimensional spacetimes, Application to the Minkowski problem in the Minkowski space

Abdelghani Zeghib (UMPA-ENSL), Fran\c{c}ois B\'eguin (LM-Orsay), Thierry Barbot (UMPA-ENSL)

arxiv:0804.1053 v1 · 2008-04-07 · gr-qc · math-ph · math.DG · 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{COUJYEDCZM7YM7C45IQK4NK2ZO}

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	2026-05-18T03:36:16.508548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13a89c1062cb3f867c5cea20ae355acb91ea31b9961b0f30b2e15949f7f2c973

Aliases

arxiv: 0804.1053 · arxiv_version: 0804.1053v1 · doi: 10.48550/arxiv.0804.1053 · pith_short_12: COUJYEDCZM7Y · pith_short_16: COUJYEDCZM7YM7C4 · pith_short_8: COUJYEDC

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/COUJYEDCZM7YM7C45IQK4NK2ZO \
  | 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: 13a89c1062cb3f867c5cea20ae355acb91ea31b9961b0f30b2e15949f7f2c973

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8df5cd757280fda8adfbc2365abd497dfefafd16006e079f7394759eec2006db",
    "cross_cats_sorted": [
      "math-ph",
      "math.DG",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-04-07T15:06:03Z",
    "title_canon_sha256": "53cf17f891ad03d8f15ad936f36e4161f986f2fe6698c985454af2e655759e6f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1053",
    "kind": "arxiv",
    "version": 1
  }
}