Pith Number

pith:7DJRNIEN

pith:2013:7DJRNIEN6MREG3IDLQJW26YCU5

not attested not anchored not stored refs pending

On the maximum fraction of edges covered by t perfect matchings in a cubic bridgeless graph

Giuseppe Mazzuoccolo, Louis Esperet

arxiv:1306.2828 v2 · 2013-06-12 · 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{7DJRNIEN6MREG3IDLQJW26YCU5}

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	2026-05-18T02:18:41.145276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8d316a08df322436d035c136d7b02a77b42ad5376d410bdcaea3fc3118aa127

Aliases

arxiv: 1306.2828 · arxiv_version: 1306.2828v2 · doi: 10.48550/arxiv.1306.2828 · pith_short_12: 7DJRNIEN6MRE · pith_short_16: 7DJRNIEN6MREG3ID · pith_short_8: 7DJRNIEN

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/7DJRNIEN6MREG3IDLQJW26YCU5 \
  | 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: f8d316a08df322436d035c136d7b02a77b42ad5376d410bdcaea3fc3118aa127

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbacd2d35729a853388f5d40f0851cdb02585d283ee8fb05a7e5cd5bb3d8bce1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-06-12T13:59:45Z",
    "title_canon_sha256": "7e23c82bb48b26aaa06a6798170b750a4a53814d2e362cf3e9c267c1e98b13a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.2828",
    "kind": "arxiv",
    "version": 2
  }
}