Pith Number

pith:BPDEMGQG

pith:2005:BPDEMGQG4NSMEWJATA2K7XSWBB

not attested not anchored not stored refs pending

Fermion absorption cross section of a Schwarzschild black hole

Anthony Lasenby, Chris Doran, Ian Hinder, Sam Dolan

arxiv:gr-qc/0503019 v1 · 2005-03-04 · gr-qc · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BPDEMGQG4NSMEWJATA2K7XSWBB}

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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.

Cited by

1 paper in Pith

Absorption cross section of a Schwarzschild black hole for a massive vector field

Receipt and verification

First computed	2026-07-04T16:55:10.914969Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bc6461a06e364c259209834afde56087eaef134001ffce5061622b524939554

Aliases

arxiv: gr-qc/0503019 · arxiv_version: gr-qc/0503019v1 · doi: 10.48550/arxiv.gr-qc/0503019 · pith_short_12: BPDEMGQG4NSM · pith_short_16: BPDEMGQG4NSMEWJA · pith_short_8: BPDEMGQG

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/BPDEMGQG4NSMEWJATA2K7XSWBB \
  | 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: 0bc6461a06e364c259209834afde56087eaef134001ffce5061622b524939554

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8755e10cfb557c6b0ebac5a38a088055a5f3a2a562fa3ad62519dc362e88ac65",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2005-03-04T16:55:12Z",
    "title_canon_sha256": "50b2a1f4807bacc76d620d438e453e25ae8254e26341baec491a1e9560382d64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0503019",
    "kind": "arxiv",
    "version": 1
  }
}