Pith Number

pith:C7J3ZBPF

pith:2018:C7J3ZBPFQJ6Q5R4QJQTFZZWCOB

not attested not anchored not stored refs pending

On indicated coloring of some classes of graphs

M. Gokulnath, P. Francis, S. Francis Raj

arxiv:1802.00251 v1 · 2018-02-01 · 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{C7J3ZBPFQJ6Q5R4QJQTFZZWCOB}

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	2026-05-18T00:24:36.431134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17d3bc85e5827d0ec7904c265ce6c27060f4b94c7922335ddc60c125daf1085f

Aliases

arxiv: 1802.00251 · arxiv_version: 1802.00251v1 · doi: 10.48550/arxiv.1802.00251 · pith_short_12: C7J3ZBPFQJ6Q · pith_short_16: C7J3ZBPFQJ6Q5R4Q · pith_short_8: C7J3ZBPF

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/C7J3ZBPFQJ6Q5R4QJQTFZZWCOB \
  | 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: 17d3bc85e5827d0ec7904c265ce6c27060f4b94c7922335ddc60c125daf1085f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f93c8b8bd404a45564b08e626614ffb79f9874d8cad9cbe3270cd1031e391bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-02-01T11:47:25Z",
    "title_canon_sha256": "09ae6b91ad13d923ecda46c0948df835b96418652e63f9cff79d3341e7bafd0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00251",
    "kind": "arxiv",
    "version": 1
  }
}