Pith Number

pith:DWO42JTU

pith:2017:DWO42JTU64NKCSPKHQMB37EL2T

not attested not anchored not stored refs pending

The Constructions of directed strongly regular graph by algebraic method

Bicheng Zhang, Huabin Cao, Yiqin He

arxiv:1703.01828 v3 · 2017-03-06 · 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{DWO42JTU64NKCSPKHQMB37EL2T}

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	2026-05-18T00:47:56.367057Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1d9dcd2674f71aa149ea3c181dfc8bd4cf717e316027c01ef0850081d2d0be09

Aliases

arxiv: 1703.01828 · arxiv_version: 1703.01828v3 · doi: 10.48550/arxiv.1703.01828 · pith_short_12: DWO42JTU64NK · pith_short_16: DWO42JTU64NKCSPK · pith_short_8: DWO42JTU

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/DWO42JTU64NKCSPKHQMB37EL2T \
  | 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: 1d9dcd2674f71aa149ea3c181dfc8bd4cf717e316027c01ef0850081d2d0be09

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f2da196e630490dcfdf26efe07f95a269c65b6202e06a1d23380c106b6d1356",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-03-06T11:56:17Z",
    "title_canon_sha256": "3665fcca2776b75c789bdc9a7336dc19ba539fa337f9a9070502bd2b376cc06a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.01828",
    "kind": "arxiv",
    "version": 3
  }
}