Pith Number

pith:43QEGMJB

pith:2015:43QEGMJBOVMHASTD3X3LE6EGIJ

not attested not anchored not stored refs pending

On an extension of Watson's lemma due to Ursell

R. B. Paris

arxiv:1505.06905 v1 · 2015-05-26 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{43QEGMJBOVMHASTD3X3LE6EGIJ}

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	2026-05-18T02:03:27.605708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6e04331217558704a63ddf6b27886427a1df79a6843e810ca23c62b9545b5fd

Aliases

arxiv: 1505.06905 · arxiv_version: 1505.06905v1 · doi: 10.48550/arxiv.1505.06905 · pith_short_12: 43QEGMJBOVMH · pith_short_16: 43QEGMJBOVMHASTD · pith_short_8: 43QEGMJB

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/43QEGMJBOVMHASTD3X3LE6EGIJ \
  | 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: e6e04331217558704a63ddf6b27886427a1df79a6843e810ca23c62b9545b5fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec21c2d676d61ce88f5c3d689793ac406de6a1760bf47d7c365ca17fcf99652c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-05-26T11:27:02Z",
    "title_canon_sha256": "789170c24d440691d297d1b9e691291bca3500be6abd515ec6f8aa6a8f7ed0d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.06905",
    "kind": "arxiv",
    "version": 1
  }
}