Pith Number

pith:ATHJONZU

pith:2013:ATHJONZUW7PCT2QKICDYCSLWF4

not attested not anchored not stored refs pending

A criterion for compatibility of conformal and projective structures

Andrzej Trautman, Vladimir S. Matveev

arxiv:1302.2329 v1 · 2013-02-10 · math.DG · 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{ATHJONZUW7PCT2QKICDYCSLWF4}

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	2026-05-18T01:31:20.068415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04ce973734b7de29ea0a40878149762f01050c2956352479ff85422758509eb4

Aliases

arxiv: 1302.2329 · arxiv_version: 1302.2329v1 · doi: 10.48550/arxiv.1302.2329 · pith_short_12: ATHJONZUW7PC · pith_short_16: ATHJONZUW7PCT2QK · pith_short_8: ATHJONZU

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/ATHJONZUW7PCT2QKICDYCSLWF4 \
  | 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: 04ce973734b7de29ea0a40878149762f01050c2956352479ff85422758509eb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e91531acf4704971c0c8ec841bb8d2f8930046b23db125076af1835783dfa64e",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-02-10T12:54:07Z",
    "title_canon_sha256": "872665bf9309c16dfa3b8cbbd0adbe86d370ef8bea8eb8e67512853a18652841"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.2329",
    "kind": "arxiv",
    "version": 1
  }
}