Pith Number

pith:7QTCAJIK

pith:2011:7QTCAJIKGM7QZEZGYGO6ZKWDVC

not attested not anchored not stored refs pending

Rainbow Matchings of size \delta(G) in Properly Edge-colored Graphs

Casey Moffatt, Florian Pfender, Jennifer Diemunsch, Michael Ferrara, Paul S. Wenger

arxiv:1108.2521 v1 · 2011-08-11 · 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{7QTCAJIKGM7QZEZGYGO6ZKWDVC}

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	2026-05-18T04:15:36.586793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc2620250a333f0c9326c19decaac3a8aa5fabf47e30feacadcaa032182471e7

Aliases

arxiv: 1108.2521 · arxiv_version: 1108.2521v1 · doi: 10.48550/arxiv.1108.2521 · pith_short_12: 7QTCAJIKGM7Q · pith_short_16: 7QTCAJIKGM7QZEZG · pith_short_8: 7QTCAJIK

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/7QTCAJIKGM7QZEZGYGO6ZKWDVC \
  | 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: fc2620250a333f0c9326c19decaac3a8aa5fabf47e30feacadcaa032182471e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "396c8aa0ded7945525c6cd232c0256edfbe1ee067031fa523b325c3a82e1d508",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2011-08-11T21:10:57Z",
    "title_canon_sha256": "a0b8ecb1d5279172577f102eca6b574035a80d12bb4917ef4d2536f5129969da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2521",
    "kind": "arxiv",
    "version": 1
  }
}