Pith Number

pith:FTWSVVUA

pith:2014:FTWSVVUAZIIAT6P4GGKNCJ5UEI

not attested not anchored not stored refs pending

Subgraphs and Colourability of Locatable Graphs

Richard A. B. Johnson, Sebastian Koch

arxiv:1402.2969 v1 · 2014-02-12 · 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{FTWSVVUAZIIAT6P4GGKNCJ5UEI}

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	2026-05-18T02:59:16.764292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ced2ad680ca1009f9fc3194d127b422042154a75ec0674c7c6b7f4f5e31b9ab

Aliases

arxiv: 1402.2969 · arxiv_version: 1402.2969v1 · doi: 10.48550/arxiv.1402.2969 · pith_short_12: FTWSVVUAZIIA · pith_short_16: FTWSVVUAZIIAT6P4 · pith_short_8: FTWSVVUA

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/FTWSVVUAZIIAT6P4GGKNCJ5UEI \
  | 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: 2ced2ad680ca1009f9fc3194d127b422042154a75ec0674c7c6b7f4f5e31b9ab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e3134dd4f5b370742f8c40bc5b49a9d098f4a72d8f297e04e67e17a1ea29f737",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-02-12T20:51:47Z",
    "title_canon_sha256": "2af459926d1117c907a07ec93e032ec114081c1637089f0e18a775c5b1fca960"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2969",
    "kind": "arxiv",
    "version": 1
  }
}