Pith Number

pith:FVCQ6UM5

pith:2013:FVCQ6UM5CJEPUDHUEQAY5JT7CH

not attested not anchored not stored refs pending

On Finding Lekkerkerker-Boland Subgraphs

Nathan Lindzey, Ross McConnell

arxiv:1303.1840 v1 · 2013-03-07 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FVCQ6UM5CJEPUDHUEQAY5JT7CH}

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	2026-05-18T03:31:32.199754Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d450f519d1248fa0cf424018ea67f11e4451cafcf9022fa57a622f75c1ed121

Aliases

arxiv: 1303.1840 · arxiv_version: 1303.1840v1 · doi: 10.48550/arxiv.1303.1840 · pith_short_12: FVCQ6UM5CJEP · pith_short_16: FVCQ6UM5CJEPUDHU · pith_short_8: FVCQ6UM5

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/FVCQ6UM5CJEPUDHUEQAY5JT7CH \
  | 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: 2d450f519d1248fa0cf424018ea67f11e4451cafcf9022fa57a622f75c1ed121

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e9cb1616941f5231d70b3edf421590fd52f405708817c82e529cf3c087f180c",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-03-07T22:23:26Z",
    "title_canon_sha256": "8e97fbc4daa578d43ad77a7defb2aa12cfa0cc7a6e12c3e48dbdc63f5d4e4b55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.1840",
    "kind": "arxiv",
    "version": 1
  }
}