Pith Number

pith:6VLXKUM4

pith:2015:6VLXKUM4GXIVB6MQATP4PJUQPP

not attested not anchored not stored refs pending

Selective Hypergraph Colourings

Christina Zarb, Josef Lauri, Yair Caro

arxiv:1504.04112 v1 · 2015-04-16 · 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{6VLXKUM4GXIVB6MQATP4PJUQPP}

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	2026-05-18T02:18:39.833162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f55775519c35d150f99004dfc7a6907bf2f814f8bd85609619fa2eeaac906c3b

Aliases

arxiv: 1504.04112 · arxiv_version: 1504.04112v1 · doi: 10.48550/arxiv.1504.04112 · pith_short_12: 6VLXKUM4GXIV · pith_short_16: 6VLXKUM4GXIVB6MQ · pith_short_8: 6VLXKUM4

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/6VLXKUM4GXIVB6MQATP4PJUQPP \
  | 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: f55775519c35d150f99004dfc7a6907bf2f814f8bd85609619fa2eeaac906c3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a3a182c4b7325fdf0e0629cc32accaf1c29325c2273fea2b6db0022b132f87d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-04-16T07:13:30Z",
    "title_canon_sha256": "0e80785049d7c4716c6f49ca54970c1c04dc6628be92f65e74fb3ee604162cb6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04112",
    "kind": "arxiv",
    "version": 1
  }
}