Pith Number

pith:ITA7DIHO

pith:2014:ITA7DIHOBT6PKYHWT57T5DZYDE

not attested not anchored not stored refs pending

Decision problem for Perfect Matchings in Dense k-uniform Hypergraphs

Jie Han

arxiv:1409.5931 v3 · 2014-09-21 · 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{ITA7DIHOBT6PKYHWT57T5DZYDE}

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	2026-05-18T01:12:18.690864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44c1f1a0ee0cfcf560f69f7f3e8f3819308721a45f695784d9366177aeab924e

Aliases

arxiv: 1409.5931 · arxiv_version: 1409.5931v3 · doi: 10.48550/arxiv.1409.5931 · pith_short_12: ITA7DIHOBT6P · pith_short_16: ITA7DIHOBT6PKYHW · pith_short_8: ITA7DIHO

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/ITA7DIHOBT6PKYHWT57T5DZYDE \
  | 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: 44c1f1a0ee0cfcf560f69f7f3e8f3819308721a45f695784d9366177aeab924e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e05a9c33d2b384384ca2d94ad697a55bf1c94d8ed9bfd16231f397d02dc1738b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-09-21T02:29:35Z",
    "title_canon_sha256": "01ed90e9185ee8db1d567b3067dc36f4de0243f04b714601bc7baaad55d56561"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5931",
    "kind": "arxiv",
    "version": 3
  }
}