Pith Number

pith:EFZAVISJ

pith:2018:EFZAVISJDSW77Z2J4SDMJHOPYW

not attested not anchored not stored refs pending

Incompatible intersection properties

Andrey Kupavskii, Peter Frankl

arxiv:1808.01229 v1 · 2018-08-03 · math.CO · cs.DM

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	2026-05-18T00:08:58.572627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21720aa2491cadffe749e486c49dcfc5b9b37137c6602eb84d4bc13625b1450a

Aliases

arxiv: 1808.01229 · arxiv_version: 1808.01229v1 · doi: 10.48550/arxiv.1808.01229 · pith_short_12: EFZAVISJDSW7 · pith_short_16: EFZAVISJDSW77Z2J · pith_short_8: EFZAVISJ

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/EFZAVISJDSW77Z2J4SDMJHOPYW \
  | 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: 21720aa2491cadffe749e486c49dcfc5b9b37137c6602eb84d4bc13625b1450a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c7352f1330ba7058ddaf5310a96e3b22616418a9bcdd0c08f68903a6bee855b",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-03T15:29:16Z",
    "title_canon_sha256": "25d71d7a2f8f6a3e76c5bea27e4feee5b6804daadb2d93aa705e735fbcaef774"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.01229",
    "kind": "arxiv",
    "version": 1
  }
}