Pith Number

pith:FKP4I55X

pith:2001:FKP4I55X5VM6O6IB2ETSSF52C5

not attested not anchored not stored refs pending

Detection of Impulsive Light-Like Signals in General Relativity

C. Barrab\`es (U. of Tours, Dublin, France), Ireland), P. A. Hogan (UCD

arxiv:gr-qc/0105033 v1 · 2001-05-09 · 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{FKP4I55X5VM6O6IB2ETSSF52C5}

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	2026-05-18T02:37:36.036071Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a9fc477b7ed59e77901d1272917ba17597d4ba15bbca5f5ba235777e83c5bea

Aliases

arxiv: gr-qc/0105033 · arxiv_version: gr-qc/0105033v1 · doi: 10.48550/arxiv.gr-qc/0105033 · pith_short_12: FKP4I55X5VM6 · pith_short_16: FKP4I55X5VM6O6IB · pith_short_8: FKP4I55X

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/FKP4I55X5VM6O6IB2ETSSF52C5 \
  | 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: 2a9fc477b7ed59e77901d1272917ba17597d4ba15bbca5f5ba235777e83c5bea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "703470a4945b050988c986e966aca0b41cce0a3a96b3892c37776bd472dca0db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2001-05-09T13:42:20Z",
    "title_canon_sha256": "02cca3a4cac29d356e48eaf75057c9e12c56dbb1dca98b83ef7b801c3fd19fd8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0105033",
    "kind": "arxiv",
    "version": 1
  }
}