Pith Number

pith:AIG52FS5

pith:2014:AIG52FS5MQZ2BWKMJMRKVUY4BZ

not attested not anchored not stored refs pending

Extremal matching energy of complements of trees

Heping Zhang, Tingzeng Wu, Weigen Yan

arxiv:1411.7458 v1 · 2014-11-27 · 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{AIG52FS5MQZ2BWKMJMRKVUY4BZ}

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	2026-05-18T02:32:37.953243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

020ddd165d6433a0d94c4b22aad31c0e7822d9d1a89b9a23e26ca0f662deca9d

Aliases

arxiv: 1411.7458 · arxiv_version: 1411.7458v1 · doi: 10.48550/arxiv.1411.7458 · pith_short_12: AIG52FS5MQZ2 · pith_short_16: AIG52FS5MQZ2BWKM · pith_short_8: AIG52FS5

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/AIG52FS5MQZ2BWKMJMRKVUY4BZ \
  | 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: 020ddd165d6433a0d94c4b22aad31c0e7822d9d1a89b9a23e26ca0f662deca9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e9c2318b518cebe1d048cd120325507f2470773832a799db66da5275e13abae",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-11-27T03:32:12Z",
    "title_canon_sha256": "20d7123f340400346a4036e0c2d6e4fb240154c7bde898f097280d180cf20c8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7458",
    "kind": "arxiv",
    "version": 1
  }
}