Pith Number

pith:7WFF7O3B

pith:2013:7WFF7O3BNRH3HHF2JAEIO7DWTI

not attested not anchored not stored refs pending

HCMU metrics with cusp singularities and conical singularities

Chen Qing, Wu Yingyi, Xu Bin

arxiv:1302.6655 v1 · 2013-02-27 · 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{7WFF7O3BNRH3HHF2JAEIO7DWTI}

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	2026-05-18T03:32:19.218504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd8a5fbb616c4fb39cba4808877c769a00b9aa882748dac2d9ca912c6dae5399

Aliases

arxiv: 1302.6655 · arxiv_version: 1302.6655v1 · doi: 10.48550/arxiv.1302.6655 · pith_short_12: 7WFF7O3BNRH3 · pith_short_16: 7WFF7O3BNRH3HHF2 · pith_short_8: 7WFF7O3B

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/7WFF7O3BNRH3HHF2JAEIO7DWTI \
  | 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: fd8a5fbb616c4fb39cba4808877c769a00b9aa882748dac2d9ca912c6dae5399

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40ef60f90a1e203b0bc5bde4201654ea185b121ab5519842d840e4921a092479",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2013-02-27T03:35:20Z",
    "title_canon_sha256": "da9c8e38995d7b4f0239bef38aa2d23678fe7b77da9fcca9d326040b671d05b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.6655",
    "kind": "arxiv",
    "version": 1
  }
}