Pith Number

pith:U7PPZMYI

pith:2012:U7PPZMYI64YRQNYPJ6GYD2MM3X

not attested not anchored not stored refs pending

Matching conditions in relativistic astrophysics

Hernando Quevedo

arxiv:1205.0500 v1 · 2012-05-02 · 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{U7PPZMYI64YRQNYPJ6GYD2MM3X}

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	2026-05-18T00:59:28.321405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7defcb308f73118370f4f8d81e98cddfdbba7cc95313d6efb93f5a570403a5c

Aliases

arxiv: 1205.0500 · arxiv_version: 1205.0500v1 · doi: 10.48550/arxiv.1205.0500 · pith_short_12: U7PPZMYI64YR · pith_short_16: U7PPZMYI64YRQNYP · pith_short_8: U7PPZMYI

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/U7PPZMYI64YRQNYPJ6GYD2MM3X \
  | 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: a7defcb308f73118370f4f8d81e98cddfdbba7cc95313d6efb93f5a570403a5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05fdcb16f5432decbaed02eee395414186d8385013647eddfa0e5b982055bc0c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2012-05-02T17:44:00Z",
    "title_canon_sha256": "f0c3474df60e81fb472d6fb9b0fd12f2dfde8533f19a849c7a7cd51195478b86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.0500",
    "kind": "arxiv",
    "version": 1
  }
}