Pith Number

pith:75VAK2K4

pith:2013:75VAK2K4TR3Y3QAFSC346ZFPL5

not attested not anchored not stored refs pending

4-Regular oriented graphs with optimum skew energy

Huishu Lian, Xiaolin Chen, Xueliang Li

arxiv:1304.0847 v1 · 2013-04-03 · 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{75VAK2K4TR3Y3QAFSC346ZFPL5}

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	2026-05-18T03:29:05.951006Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff6a05695c9c778dc00590b7cf64af5f587c419f1fa119a00a97087d5a25c4a4

Aliases

arxiv: 1304.0847 · arxiv_version: 1304.0847v1 · doi: 10.48550/arxiv.1304.0847 · pith_short_12: 75VAK2K4TR3Y · pith_short_16: 75VAK2K4TR3Y3QAF · pith_short_8: 75VAK2K4

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/75VAK2K4TR3Y3QAFSC346ZFPL5 \
  | 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: ff6a05695c9c778dc00590b7cf64af5f587c419f1fa119a00a97087d5a25c4a4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6707752f921a901d83197f0d14ffbae57d757772c9de5c9c17748b72496b4d51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-04-03T06:00:28Z",
    "title_canon_sha256": "3c018f6fac3a9cf20d22a255bce1081df00256e24122ebf1b17b9391a31ca5fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0847",
    "kind": "arxiv",
    "version": 1
  }
}