Pith Number

pith:TAK6YTUS

pith:2018:TAK6YTUSCSTA352BENN4T5H5KX

not attested not anchored not stored refs pending

Edge colourings and topological graph polynomials

Iain Moffatt, Joanna A. Ellis-Monaghan, Louis H. Kauffman

arxiv:1807.07500 v1 · 2018-07-19 · 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{TAK6YTUSCSTA352BENN4T5H5KX}

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	2026-05-18T00:10:20.006890Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9815ec4e9214a60df741235bc9f4fd55e3f8b41099e0c575f6621e2b94848d5c

Aliases

arxiv: 1807.07500 · arxiv_version: 1807.07500v1 · doi: 10.48550/arxiv.1807.07500 · pith_short_12: TAK6YTUSCSTA · pith_short_16: TAK6YTUSCSTA352B · pith_short_8: TAK6YTUS

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/TAK6YTUSCSTA352BENN4T5H5KX \
  | 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: 9815ec4e9214a60df741235bc9f4fd55e3f8b41099e0c575f6621e2b94848d5c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53bd622ee1c2b0706c0fd6767d4e6640e4e5c9304ea6f0ef26ba5e359c4e4095",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-19T15:40:45Z",
    "title_canon_sha256": "468f2203116656c3cb5bd29287b7aeb35d3f916918e0ae790b48213a1b09808a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07500",
    "kind": "arxiv",
    "version": 1
  }
}