Pith Number

pith:DNFBCNAV

pith:2018:DNFBCNAVJIV34526FU5SAGJWC6

not attested not anchored not stored refs pending

An effective crossing minimisation heuristic based on star insertion

Alex Newcombe, Kieran Clancy, Michael Haythorpe

arxiv:1804.09900 v3 · 2018-04-26 · math.CO · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DNFBCNAVJIV34526FU5SAGJWC6}

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	2026-05-17T23:53:57.709551Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1b4a1134154a2bbe775e2d3b20193617a6fe290d911d0cfb17f74ea11d07fb11

Aliases

arxiv: 1804.09900 · arxiv_version: 1804.09900v3 · doi: 10.48550/arxiv.1804.09900 · pith_short_12: DNFBCNAVJIV3 · pith_short_16: DNFBCNAVJIV34526 · pith_short_8: DNFBCNAV

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/DNFBCNAVJIV34526FU5SAGJWC6 \
  | 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: 1b4a1134154a2bbe775e2d3b20193617a6fe290d911d0cfb17f74ea11d07fb11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f523e725900e2d3fde6d93926aa17189840d4a909647963946b780385089f63",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-04-26T06:09:12Z",
    "title_canon_sha256": "35d4d4ff0c8e6fc7d8969de189b8d1186dc7d3fc496ad45db63e7634d7674fc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.09900",
    "kind": "arxiv",
    "version": 3
  }
}