Pith Number

pith:XWMGGTYE

pith:2018:XWMGGTYEDI2T5JNXTLQWVAT6C4

not attested not anchored not stored refs pending

On the vertex cover number of 3 uniform hypergraph

Zhuo Diao

arxiv:1807.00473 v1 · 2018-07-02 · 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{XWMGGTYEDI2T5JNXTLQWVAT6C4}

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	2026-05-18T00:11:52.528539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd98634f041a353ea5b79ae16a827e17146f9d0e68e2a44b6fce1d367df5b585

Aliases

arxiv: 1807.00473 · arxiv_version: 1807.00473v1 · doi: 10.48550/arxiv.1807.00473 · pith_short_12: XWMGGTYEDI2T · pith_short_16: XWMGGTYEDI2T5JNX · pith_short_8: XWMGGTYE

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/XWMGGTYEDI2T5JNXTLQWVAT6C4 \
  | 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: bd98634f041a353ea5b79ae16a827e17146f9d0e68e2a44b6fce1d367df5b585

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08ce5a6f09c6f220f4462b92982b0ecf0303d4e7a9fdd366be5075d3def6f163",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-07-02T05:52:47Z",
    "title_canon_sha256": "e1f388da0f30fb4a917a91cadda7fcf9abe91ec9af077fd7e9a0ddcd9ea1c1c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.00473",
    "kind": "arxiv",
    "version": 1
  }
}