Pith Number

pith:BDFCDKWD

pith:2004:BDFCDKWDNTLD4CYS6EBI3SKHR7

not attested not anchored not stored refs pending

Alignment and algebraically special tensors in Lorentzian geometry

A. Coley, A. Pravdova, R. Milson, V. Pravda

arxiv:gr-qc/0401010 v3 · 2004-01-04 · 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{BDFCDKWDNTLD4CYS6EBI3SKHR7}

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	2026-07-04T15:28:42.680769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08ca21aac36cd63e0b12f1028dc9478ff555ea5b5ba3788c4b4821f78a387126

Aliases

arxiv: gr-qc/0401010 · arxiv_version: gr-qc/0401010v3 · doi: 10.48550/arxiv.gr-qc/0401010 · pith_short_12: BDFCDKWDNTLD · pith_short_16: BDFCDKWDNTLD4CYS · pith_short_8: BDFCDKWD

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/BDFCDKWDNTLD4CYS6EBI3SKHR7 \
  | 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: 08ca21aac36cd63e0b12f1028dc9478ff555ea5b5ba3788c4b4821f78a387126

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef899695e519a4ecafb34e84e9f66fec4d189a266fc5c6227daf54a855eedaf4",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2004-01-04T04:21:41Z",
    "title_canon_sha256": "47b520437a2729b2bbcf2a19841c690d945fde54fe327a172b3a4faa1f7fc000"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0401010",
    "kind": "arxiv",
    "version": 3
  }
}