Pith Number

pith:ODKWI27J

pith:2017:ODKWI27J553YCLWVGTOB5ISTNW

not attested not anchored not stored refs pending

Lorentzian surfaces and the curvature of the Schmidt metric

Cesar Merlin, Ricardo Reynoso Fuentes, Yafet Sanchez Sanchez

arxiv:1702.00315 v3 · 2017-02-01 · gr-qc · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ODKWI27J553YCLWVGTOB5ISTNW}

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	2026-05-18T00:19:42.445117Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

70d5646be9ef77812ed534dc1ea2536dba5658c28106d728a076ddf602379f63

Aliases

arxiv: 1702.00315 · arxiv_version: 1702.00315v3 · doi: 10.48550/arxiv.1702.00315 · pith_short_12: ODKWI27J553Y · pith_short_16: ODKWI27J553YCLWV · pith_short_8: ODKWI27J

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/ODKWI27J553YCLWVGTOB5ISTNW \
  | 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: 70d5646be9ef77812ed534dc1ea2536dba5658c28106d728a076ddf602379f63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d9e994fe0a48dcb8232bb3ea1a17099c8ac9551d59f6e6bad22cb8286179041f",
    "cross_cats_sorted": [
      "math.DG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2017-02-01T15:32:19Z",
    "title_canon_sha256": "c81759d900642e9f3f67ee10aa89af39c590b5f3a32bd90a8337d9d16b9f5b5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00315",
    "kind": "arxiv",
    "version": 3
  }
}