Pith Number

pith:25MT7X52

pith:2014:25MT7X52URNWEVP3QALGS43J2F

not attested not anchored not stored refs pending

Counting perfect matchings in graphs that exclude a single-crossing minor

Radu Curticapean

arxiv:1406.4056 v1 · 2014-06-16 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{25MT7X52URNWEVP3QALGS43J2F}

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	2026-05-18T02:49:39.305016Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7593fdfbaa45b6255fb8016697369d14cbcd94ff9061b724874d4597ccdbf31

Aliases

arxiv: 1406.4056 · arxiv_version: 1406.4056v1 · doi: 10.48550/arxiv.1406.4056 · pith_short_12: 25MT7X52URNW · pith_short_16: 25MT7X52URNWEVP3 · pith_short_8: 25MT7X52

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/25MT7X52URNWEVP3QALGS43J2F \
  | 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: d7593fdfbaa45b6255fb8016697369d14cbcd94ff9061b724874d4597ccdbf31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "884c928909cb1f3ec4a72943884de57731fca0ca177c3531bce13ee2c7eb7212",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-06-16T16:06:46Z",
    "title_canon_sha256": "62fe11419a7e762e3a129409f7e69ae76430469596ddea3648903b8e59c583fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.4056",
    "kind": "arxiv",
    "version": 1
  }
}