Pith Number

pith:YJDDZYSZ

pith:2017:YJDDZYSZAVQDU6JDORIG3HIZOR

not attested not anchored not stored refs pending

Steiner triple systems with high chromatic index

Charles Colbourn, Daniel Horsley, Darryn Bryant, Ian M. Wanless

arxiv:1702.00521 v3 · 2017-02-02 · 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{YJDDZYSZAVQDU6JDORIG3HIZOR}

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	2026-05-18T00:26:30.453608Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2463ce25905603a792374506d9d197465aa4b4d2213c4f0d62b3331919ea8e4

Aliases

arxiv: 1702.00521 · arxiv_version: 1702.00521v3 · doi: 10.48550/arxiv.1702.00521 · pith_short_12: YJDDZYSZAVQD · pith_short_16: YJDDZYSZAVQDU6JD · pith_short_8: YJDDZYSZ

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/YJDDZYSZAVQDU6JDORIG3HIZOR \
  | 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: c2463ce25905603a792374506d9d197465aa4b4d2213c4f0d62b3331919ea8e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63e1d626cd580b1e1012a011b3dd711e6b37d7cb502a7dad579268ab02e8137b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-02-02T01:47:57Z",
    "title_canon_sha256": "1f869c74222ec2741ccd9e341caf6b0fc80d3c05339a022a534e1e3b58e1b629"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.00521",
    "kind": "arxiv",
    "version": 3
  }
}