Pith Number

pith:CANCY4OU

pith:2015:CANCY4OUGLHZV24HYQCEOSAAIU

not attested not anchored not stored refs pending

Max-cut and extendability of matchings in distance-regular graphs

Jack H. Koolen, Sebastian M. Cioab\u{a}, Weiqiang Li

arxiv:1507.06254 v2 · 2015-07-22 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CANCY4OUGLHZV24HYQCEOSAAIU}

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	2026-05-18T00:53:17.798878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

101a2c71d432cf9aeb87c404474800452d2481a78585334190bc9bb4a5bb127b

Aliases

arxiv: 1507.06254 · arxiv_version: 1507.06254v2 · doi: 10.48550/arxiv.1507.06254 · pith_short_12: CANCY4OUGLHZ · pith_short_16: CANCY4OUGLHZV24H · pith_short_8: CANCY4OU

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/CANCY4OUGLHZV24HYQCEOSAAIU \
  | 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: 101a2c71d432cf9aeb87c404474800452d2481a78585334190bc9bb4a5bb127b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cd2a119a719ebfe624284e12ca337f867b22946042ebfff64453b63dba930da",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-22T16:57:16Z",
    "title_canon_sha256": "3dda63d3df198d2123410fd25a70ba75c669cfa7ffd40e74481730b966663d0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.06254",
    "kind": "arxiv",
    "version": 2
  }
}