Pith Number

pith:WWSE4PNZ

pith:2015:WWSE4PNZLISJAEQMBEO6H4O32E

not attested not anchored not stored refs pending

Isomorphy up to complementation

Hamza Si Kaddour, Maurice Pouzet

arxiv:1501.05181 v1 · 2015-01-21 · 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{WWSE4PNZLISJAEQMBEO6H4O32E}

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	2026-05-18T02:29:00.599009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5a44e3db95a2490120c091de3f1dbd130d61903c39051da1c01f1513fb6b262

Aliases

arxiv: 1501.05181 · arxiv_version: 1501.05181v1 · doi: 10.48550/arxiv.1501.05181 · pith_short_12: WWSE4PNZLISJ · pith_short_16: WWSE4PNZLISJAEQM · pith_short_8: WWSE4PNZ

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/WWSE4PNZLISJAEQMBEO6H4O32E \
  | 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: b5a44e3db95a2490120c091de3f1dbd130d61903c39051da1c01f1513fb6b262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74f0766b2a35d4972dced7b6f36dd74b7451e1d103b4ac17b0d695b6ce10b86a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-01-21T14:41:58Z",
    "title_canon_sha256": "0091833cf87dfdcf987b2c9abdfaf56bd468cd69c36bcbe5b6724883276f2f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05181",
    "kind": "arxiv",
    "version": 1
  }
}