Pith Number

pith:PEUBGDBZ

pith:2014:PEUBGDBZGQLYR4PTS5Q3ZGTWDK

not attested not anchored not stored refs pending

Equitable block colourings

Lucia Marino, Paola Bonacini

arxiv:1406.5454 v1 · 2014-06-20 · 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{PEUBGDBZGQLYR4PTS5Q3ZGTWDK}

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	2026-05-18T02:49:19.058216Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7928130c39341788f1f39761bc9a761a973b05d742c914ddd8b26e29046cd8eb

Aliases

arxiv: 1406.5454 · arxiv_version: 1406.5454v1 · doi: 10.48550/arxiv.1406.5454 · pith_short_12: PEUBGDBZGQLY · pith_short_16: PEUBGDBZGQLYR4PT · pith_short_8: PEUBGDBZ

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/PEUBGDBZGQLYR4PTS5Q3ZGTWDK \
  | 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: 7928130c39341788f1f39761bc9a761a973b05d742c914ddd8b26e29046cd8eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d94c9bf26875dec1427609a309797f4e31755d89c4c7c2e3cc270ec668ee84fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-06-20T16:29:07Z",
    "title_canon_sha256": "e95f82442af3b4b015cebe77dbfe76ebb4c8879d4aa2a8b2fe78a3c4174ce41e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.5454",
    "kind": "arxiv",
    "version": 1
  }
}