Pith Number

pith:2MLZXPJZ

pith:2012:2MLZXPJZEHP6C5UBKHS2H2ENGX

not attested not anchored not stored refs pending

The Medusa of Spatial Sorting: Topological Construction

Carl-Philipp Heisenberg, Gabriel Krens, Herbert Edelsbrunner, Michael Kerber

arxiv:1207.6474 v1 · 2012-07-27 · cs.CG · math.AT · q-bio.CB · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2MLZXPJZEHP6C5UBKHS2H2ENGX}

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	2026-05-18T03:49:59.222053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3179bbd3921dfe1768151e5a3e88d35ee7e5d252a61bbb3434fe46ce097b4e8

Aliases

arxiv: 1207.6474 · arxiv_version: 1207.6474v1 · doi: 10.48550/arxiv.1207.6474 · pith_short_12: 2MLZXPJZEHP6 · pith_short_16: 2MLZXPJZEHP6C5UB · pith_short_8: 2MLZXPJZ

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/2MLZXPJZEHP6C5UBKHS2H2ENGX \
  | 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: d3179bbd3921dfe1768151e5a3e88d35ee7e5d252a61bbb3434fe46ce097b4e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "321a1ce9e7bdc7bc34708e6b6d187ae3d07b953a8f5b6a0d65cdd0a3f482c118",
    "cross_cats_sorted": [
      "math.AT",
      "q-bio.CB",
      "q-bio.QM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-07-27T07:33:28Z",
    "title_canon_sha256": "cc3f1c1bad164c80fb142d6afae96d085ae6f5ac4290fbca850a103cd152e08a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6474",
    "kind": "arxiv",
    "version": 1
  }
}