Pith Number

pith:WZLZRQXH

pith:2015:WZLZRQXH2GX2CG4RFWHNHAIHQJ

not attested not anchored not stored refs pending

An algorithm for the Euclidean cell decomposition of a cusped strictly convex projective surface

Sampson Wong, Stephan Tillmann

arxiv:1512.01645 v1 · 2015-12-05 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WZLZRQXH2GX2CG4RFWHNHAIHQJ}

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	2026-05-18T01:25:10.739535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b65798c2e7d1afa11b912d8ed38107825cc71c9dbecdb648aca16c9deb50d812

Aliases

arxiv: 1512.01645 · arxiv_version: 1512.01645v1 · doi: 10.48550/arxiv.1512.01645 · pith_short_12: WZLZRQXH2GX2 · pith_short_16: WZLZRQXH2GX2CG4R · pith_short_8: WZLZRQXH

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/WZLZRQXH2GX2CG4RFWHNHAIHQJ \
  | 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: b65798c2e7d1afa11b912d8ed38107825cc71c9dbecdb648aca16c9deb50d812

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f161c6219fd28894de7259f8a025b6297b56c2434735ff2427038e5cda3d7d4b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2015-12-05T09:33:23Z",
    "title_canon_sha256": "00c1ce0b8268fb640ed498a4b9f92f929605ce4bccf3b28922c93306f3e7fc37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.01645",
    "kind": "arxiv",
    "version": 1
  }
}