Pith Number

pith:WK643DMI

pith:2015:WK643DMI67REICAA6I4I5ST3YO

not attested not anchored not stored refs pending

A note on $\mathtt{V}$-free $2$-matchings

Attila Bern\'ath, Krist\'of B\'erczi, M\'at\'e Vizer

arxiv:1505.03717 v1 · 2015-05-14 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WK643DMI67REICAA6I4I5ST3YO}

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	2026-05-18T02:09:53.209257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2bdcd8d88f7e2440800f2388eca7bc3870e9aeb6904802eac13cad1cd80b55e

Aliases

arxiv: 1505.03717 · arxiv_version: 1505.03717v1 · doi: 10.48550/arxiv.1505.03717 · pith_short_12: WK643DMI67RE · pith_short_16: WK643DMI67REICAA · pith_short_8: WK643DMI

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/WK643DMI67REICAA6I4I5ST3YO \
  | 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: b2bdcd8d88f7e2440800f2388eca7bc3870e9aeb6904802eac13cad1cd80b55e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c62ae0643153aed23b929e93afbb3b79db9bc39c87b176d50b577ac072ad9f46",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-05-14T13:29:22Z",
    "title_canon_sha256": "ac400dfeaa5754857f09b02384630b3b18408835bacec89bfe7fcbaac7da213e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03717",
    "kind": "arxiv",
    "version": 1
  }
}