Pith Number

pith:S52HFGCU

pith:2010:S52HFGCUQ3TKEVZJMYKBEKRNO7

not attested not anchored not stored refs pending

On Rainbow Connection of Strongly Regular Graphs

Ali Dehghan, Arash Ahadi

arxiv:1001.3413 v3 · 2010-01-19 · 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{S52HFGCUQ3TKEVZJMYKBEKRNO7}

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	2026-05-18T04:07:16.086343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

977472985486e6a257296614122a2d77c9716aeb2af96c53ef83e8f8a1e64270

Aliases

arxiv: 1001.3413 · arxiv_version: 1001.3413v3 · doi: 10.48550/arxiv.1001.3413 · pith_short_12: S52HFGCUQ3TK · pith_short_16: S52HFGCUQ3TKEVZJ · pith_short_8: S52HFGCU

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/S52HFGCUQ3TKEVZJMYKBEKRNO7 \
  | 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: 977472985486e6a257296614122a2d77c9716aeb2af96c53ef83e8f8a1e64270

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc94d9b21bbb5f2802695fe3a3771dee2ad19303693d5cd2c9dbc762f560d8af",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2010-01-19T21:14:54Z",
    "title_canon_sha256": "67935a1753bffd202821bf716a3fb3220f3b69fdb8413863381838ec7b8b968f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.3413",
    "kind": "arxiv",
    "version": 3
  }
}