Pith Number

pith:3G5MQXUW

pith:2019:3G5MQXUWYCCGN7A6QGWBB5RCAD

not attested not anchored not stored refs pending

The Ideal Approach to Computing Closed Subsets in Well-Quasi-Ordering

Jean Goubault-Larrecq, K. Narayan Kumar, Philippe Schnoebelen, Prateek Karandikar, Simon Halfon

arxiv:1904.10703 v1 · 2019-04-24 · cs.LO · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3G5MQXUWYCCGN7A6QGWBB5RCAD}

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	2026-05-17T23:47:50.269558Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d9bac85e96c08466fc1e81ac10f62200c1cf235f1296efdda8b0f130c2bf70a2

Aliases

arxiv: 1904.10703 · arxiv_version: 1904.10703v1 · doi: 10.48550/arxiv.1904.10703 · pith_short_12: 3G5MQXUWYCCG · pith_short_16: 3G5MQXUWYCCGN7A6 · pith_short_8: 3G5MQXUW

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/3G5MQXUWYCCGN7A6QGWBB5RCAD \
  | 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: d9bac85e96c08466fc1e81ac10f62200c1cf235f1296efdda8b0f130c2bf70a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb20850749a5d652c6d450b5d96fc575d5b33fffb2b41b5ac821543788be5cd4",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-04-24T09:06:15Z",
    "title_canon_sha256": "e0e5f606c05c0302f6d74f506ef8b0cce930510616b102abb0534519ced80e79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.10703",
    "kind": "arxiv",
    "version": 1
  }
}