Pith Number

pith:LKEVELGU

pith:2014:LKEVELGUYOEJJDKUINYK7TPPFQ

not attested not anchored not stored refs pending

On the neighbour sum distinguishing index of planar graphs

Jakub Przyby{\l}o, Marthe Bonamy

arxiv:1408.3190 v2 · 2014-08-14 · cs.DM · 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{LKEVELGUYOEJJDKUINYK7TPPFQ}

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	2026-05-18T00:21:57.471618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a89522cd4c388948d544370afcdef2c1b9e63cd8aa14cf7e1979d0dbdb4fca4

Aliases

arxiv: 1408.3190 · arxiv_version: 1408.3190v2 · doi: 10.48550/arxiv.1408.3190 · pith_short_12: LKEVELGUYOEJ · pith_short_16: LKEVELGUYOEJJDKU · pith_short_8: LKEVELGU

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/LKEVELGUYOEJJDKUINYK7TPPFQ \
  | 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: 5a89522cd4c388948d544370afcdef2c1b9e63cd8aa14cf7e1979d0dbdb4fca4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b40bff109b1ac204a3460dcec6620ec46b518d2ba50dba7308bdef360bcee64d",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-08-14T04:22:07Z",
    "title_canon_sha256": "a51f61e3d85321c57c36a5ac478bd08a8cf3891a15ee04ec5a6ff33abcab01ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.3190",
    "kind": "arxiv",
    "version": 2
  }
}