Pith Number

pith:QCT6NWXV

pith:2018:QCT6NWXVN6ANXBCZQUWXKE6AKS

not attested not anchored not stored refs pending

On maximum $k$-edge-colorable subgraphs of bipartite graphs

Liana Karapetyan, Vahan Mkrtchyan

arxiv:1807.06556 v1 · 2018-07-17 · cs.DM · 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{QCT6NWXVN6ANXBCZQUWXKE6AKS}

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	2026-05-18T00:10:32.696150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80a7e6daf56f80db8459852d7513c054b9adcb574004af11293c2e58e7ac5f96

Aliases

arxiv: 1807.06556 · arxiv_version: 1807.06556v1 · doi: 10.48550/arxiv.1807.06556 · pith_short_12: QCT6NWXVN6AN · pith_short_16: QCT6NWXVN6ANXBCZ · pith_short_8: QCT6NWXV

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/QCT6NWXVN6ANXBCZQUWXKE6AKS \
  | 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: 80a7e6daf56f80db8459852d7513c054b9adcb574004af11293c2e58e7ac5f96

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28b58336a89449adf93c2112b397cb6f9c99a94fdf4de76432306290f1fafda0",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2018-07-17T17:04:03Z",
    "title_canon_sha256": "ebe7c365a4635b5c2d30f022d41ba2af40da15a2903390dd174eb0785d54b5eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06556",
    "kind": "arxiv",
    "version": 1
  }
}