Pith Number

pith:QDDU223A

pith:2015:QDDU223AW6GPQF2N4MV2JYIKLQ

not attested not anchored not stored refs pending

Maximizing spectral radii of uniform hypergraphs with few edges

An-Hong Liu, Xi-Xi Peng, Ying-Ying Tan, Yi-Zheng Fan

arxiv:1502.04271 v2 · 2015-02-15 · 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{QDDU223AW6GPQF2N4MV2JYIKLQ}

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	2026-05-18T00:35:55.889904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80c74d6b60b78cf8174de32ba4e10a5c3efbcf5668c61d6d0e559eb50224822f

Aliases

arxiv: 1502.04271 · arxiv_version: 1502.04271v2 · doi: 10.48550/arxiv.1502.04271 · pith_short_12: QDDU223AW6GP · pith_short_16: QDDU223AW6GPQF2N · pith_short_8: QDDU223A

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/QDDU223AW6GPQF2N4MV2JYIKLQ \
  | 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: 80c74d6b60b78cf8174de32ba4e10a5c3efbcf5668c61d6d0e559eb50224822f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b9dba8892501d66bf6dbabd82d312afc144c06af94384d41609651c49d67735",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-02-15T02:24:56Z",
    "title_canon_sha256": "99557b31536e40e201777cf9089126fa44bcac00e77905b1d1627e625113f944"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.04271",
    "kind": "arxiv",
    "version": 2
  }
}