Pith Number

pith:HBU4QCQS

pith:2012:HBU4QCQSRXA5W6D2UIUV7ND4TK

not attested not anchored not stored refs pending

Quasi-Einstein metrics on hypersurface families

Stuart James Hall

arxiv:1204.6430 v2 · 2012-04-28 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HBU4QCQSRXA5W6D2UIUV7ND4TK}

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	2026-05-18T01:57:42.749246Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3869c80a128dc1db787aa2295fb47c9abfa2821a63d0a526678047490d5f8e1e

Aliases

arxiv: 1204.6430 · arxiv_version: 1204.6430v2 · doi: 10.48550/arxiv.1204.6430 · pith_short_12: HBU4QCQSRXA5 · pith_short_16: HBU4QCQSRXA5W6D2 · pith_short_8: HBU4QCQS

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/HBU4QCQSRXA5W6D2UIUV7ND4TK \
  | 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: 3869c80a128dc1db787aa2295fb47c9abfa2821a63d0a526678047490d5f8e1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f47bff1dda6e1dda7c5e32b203df70a0acf2f75408353a9faf1c5ac1465c6ce7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-04-28T20:56:22Z",
    "title_canon_sha256": "2fe881f9ff0fc54f50193bd36105278047fa5c312df305845c7ca2b9041fc87e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6430",
    "kind": "arxiv",
    "version": 2
  }
}