Pith Number

pith:7NDDI7LR

pith:2018:7NDDI7LRPI2UBIKLFM7XNLWAJL

not attested not anchored not stored refs pending

Searching for square-complementary graphs: non-existence results and complexity of recognition

Martin Milani\v{c}, Miguel Piza\~na, Ratko Darda

arxiv:1808.01313 v1 · 2018-08-03 · math.CO · cs.CC · 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{7NDDI7LRPI2UBIKLFM7XNLWAJL}

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	2026-05-18T00:08:53.414699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb46347d717a3540a14b2b3f76aec04af4f5bd17ce4c83fd586372ac056d0ab3

Aliases

arxiv: 1808.01313 · arxiv_version: 1808.01313v1 · doi: 10.48550/arxiv.1808.01313 · pith_short_12: 7NDDI7LRPI2U · pith_short_16: 7NDDI7LRPI2UBIKL · pith_short_8: 7NDDI7LR

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/7NDDI7LRPI2UBIKLFM7XNLWAJL \
  | 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: fb46347d717a3540a14b2b3f76aec04af4f5bd17ce4c83fd586372ac056d0ab3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a9dd08e7922efa5ba792f14f70e85db230dbf7a249cf95f5cddeaf9acbe8e35",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-03T19:13:05Z",
    "title_canon_sha256": "796a3cdd29e0ff5495b7ffa25964a7be595625fde22c3fc9aba1e4ffc2eb507f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01313",
    "kind": "arxiv",
    "version": 1
  }
}