Pith Number

pith:QJ7IFXEF

pith:1994:QJ7IFXEFWPK3LBLGAGARPCCF2F

not attested not anchored not stored refs pending

Three-dimensional alpha shapes

Ernst M\"ucke, Herbert Edelsbrunner

arxiv:math/9410208 v1 · 1994-10-12 · math.CO · cs.CC · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QJ7IFXEFWPK3LBLGAGARPCCF2F}

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.

Cited by

1 paper in Pith

Stochastic Homology of Gaussian vs. non-Gaussian Random Fields: Graphs towards Betti Numbers and Persistence Diagrams

Receipt and verification

First computed	2026-05-18T01:05:50.994935Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

827e82dc85b3d5b585660181178845d14a2ed3e35df1b046c95a0247d8f02dc1

Aliases

arxiv: math/9410208 · arxiv_version: math/9410208v1 · doi: 10.48550/arxiv.math/9410208 · pith_short_12: QJ7IFXEFWPK3 · pith_short_16: QJ7IFXEFWPK3LBLG · pith_short_8: QJ7IFXEF

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/QJ7IFXEFWPK3LBLGAGARPCCF2F \
  | 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: 827e82dc85b3d5b585660181178845d14a2ed3e35df1b046c95a0247d8f02dc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59ba51f998d0f3b52f10b160878b20b001d8cdbd524398928fa2e14e6120626e",
    "cross_cats_sorted": [
      "cs.CC",
      "math.MG"
    ],
    "license": "",
    "primary_cat": "math.CO",
    "submitted_at": "1994-10-12T00:00:00Z",
    "title_canon_sha256": "579bbb57035d748a09b1a8ee8a5af80a8937fca4f0a817d9b7da156df79d7f0a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/9410208",
    "kind": "arxiv",
    "version": 1
  }
}