Pith Number

pith:4NGMEQF4

pith:2014:4NGMEQF4NQD65HWT2ZFRMOAT5T

not attested not anchored not stored refs pending

A characterization of 3+1 spacetimes via the Simon-Mars tensor

C. Som\'e, E. Gourgoulhon, P. Grandcl\'ement

arxiv:1412.6542 v1 · 2014-12-19 · 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{4NGMEQF4NQD65HWT2ZFRMOAT5T}

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	2026-05-18T02:30:46.625987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e34cc240bc6c07ee9ed3d64b163813ecceecba136d4280249b37ed9702870a62

Aliases

arxiv: 1412.6542 · arxiv_version: 1412.6542v1 · doi: 10.48550/arxiv.1412.6542 · pith_short_12: 4NGMEQF4NQD6 · pith_short_16: 4NGMEQF4NQD65HWT · pith_short_8: 4NGMEQF4

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/4NGMEQF4NQD65HWT2ZFRMOAT5T \
  | 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: e34cc240bc6c07ee9ed3d64b163813ecceecba136d4280249b37ed9702870a62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d4ff1a418c7b008cca0c4bf93698a4158bd5cc1ac28bf964a240acbf0b38970",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2014-12-19T21:42:08Z",
    "title_canon_sha256": "d6c51efb5acafbd81efe8b4369c898575f558459ac47b660f811210c798756e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.6542",
    "kind": "arxiv",
    "version": 1
  }
}