Pith Number

pith:CI2EEHB2

pith:2016:CI2EEHB2R3AET3KANX3IZMV6OR

not attested not anchored not stored refs pending

Angular diameter distances reconsidered in the Newman and Penrose formalism

Aly Aly, Thomas P. Kling

arxiv:1601.02475 v1 · 2016-01-11 · gr-qc · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CI2EEHB2R3AET3KANX3IZMV6OR}

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	2026-05-18T01:23:06.363470Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1234421c3a8ec049ed406df68cb2be746f733b05965fcce6a94ef3c72e851fd0

Aliases

arxiv: 1601.02475 · arxiv_version: 1601.02475v1 · doi: 10.48550/arxiv.1601.02475 · pith_short_12: CI2EEHB2R3AE · pith_short_16: CI2EEHB2R3AET3KA · pith_short_8: CI2EEHB2

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/CI2EEHB2R3AET3KANX3IZMV6OR \
  | 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: 1234421c3a8ec049ed406df68cb2be746f733b05965fcce6a94ef3c72e851fd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "577df429de1f8de7aa700fcb9d36342ff3dfbd023c83145b8b5b79750650fe6f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2016-01-11T15:22:15Z",
    "title_canon_sha256": "6c5ab2098a70a11de5f3f931f59a6080d9141eb07d7aa3df39c1ebc809f3b32a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.02475",
    "kind": "arxiv",
    "version": 1
  }
}