Pith Number

pith:7SYCLWRE

pith:2018:7SYCLWREMPTDTBSPDOLCM6QR2H

not attested not anchored not stored refs pending

3-colored asymmetric bipartite Ramsey number of connected matchings and cycles

Yuejian Peng, Zhidan Luo

arxiv:1809.05413 v2 · 2018-09-13 · math.CO

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

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	2026-05-18T00:05:27.496615Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcb025da2463e639864f1b96267a11d1e7cc38de00d725b203d8079754fba8e6

Aliases

arxiv: 1809.05413 · arxiv_version: 1809.05413v2 · doi: 10.48550/arxiv.1809.05413 · pith_short_12: 7SYCLWREMPTD · pith_short_16: 7SYCLWREMPTDTBSP · pith_short_8: 7SYCLWRE

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/7SYCLWREMPTDTBSPDOLCM6QR2H \
  | 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: fcb025da2463e639864f1b96267a11d1e7cc38de00d725b203d8079754fba8e6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d532315325dc98916c099e44e61b67df58fc1cbe96028b6e62bd891b323ca823",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-09-13T12:01:38Z",
    "title_canon_sha256": "c279d22b9047503e6b8ed22c3601bdaa3652a1b59e1057901a6b3ff1053a93d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05413",
    "kind": "arxiv",
    "version": 2
  }
}