Pith Number

pith:LAAY4CRV

pith:2017:LAAY4CRVGDYCJVM3MVTWIXUQJW

not attested not anchored not stored refs pending

Solving the clique cover problem on (bull, $C_4$)-free graphs

Ch\'inh T. Ho\`ang, Kathie Cameron

arxiv:1704.00316 v1 · 2017-04-02 · 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{LAAY4CRVGDYCJVM3MVTWIXUQJW}

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	2026-05-18T00:47:24.797105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58018e0a3530f024d59b6567645e904d986c07939e360a31410b86d55e8c9fe4

Aliases

arxiv: 1704.00316 · arxiv_version: 1704.00316v1 · doi: 10.48550/arxiv.1704.00316 · pith_short_12: LAAY4CRVGDYC · pith_short_16: LAAY4CRVGDYCJVM3 · pith_short_8: LAAY4CRV

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/LAAY4CRVGDYCJVM3MVTWIXUQJW \
  | 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: 58018e0a3530f024d59b6567645e904d986c07939e360a31410b86d55e8c9fe4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a529c4185993acecf183379fbc60a3531ffd130ae5d44412c5b3b137d10c29bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2017-04-02T15:29:19Z",
    "title_canon_sha256": "e3e19e4b0d2a75eb3ac1b3054f5f6484de61ccee3f0c29c14110ae3649fa9c09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.00316",
    "kind": "arxiv",
    "version": 1
  }
}