Pith Number

pith:SZB75PDS

pith:2025:SZB75PDSBQTJOV2XRRPQCO62Y5

not attested not anchored not stored refs pending

On the structure and theory of McCarthy algebras

Gavin St. John, Stefano Bonzio

arxiv:2503.10816 v3 · 2025-03-13 · math.LO · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SZB75PDSBQTJOV2XRRPQCO62Y5}

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	2026-06-19T16:12:13.424877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9643febc720c269757578c5f013bdac750f137b65cc20883aa12bd96bf834946

Aliases

arxiv: 2503.10816 · arxiv_version: 2503.10816v3 · doi: 10.48550/arxiv.2503.10816 · pith_short_12: SZB75PDSBQTJ · pith_short_16: SZB75PDSBQTJOV2X · pith_short_8: SZB75PDS

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/SZB75PDSBQTJOV2XRRPQCO62Y5 \
  | 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: 9643febc720c269757578c5f013bdac750f137b65cc20883aa12bd96bf834946

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08fbc400129ac65aaca343a3694adc804b5a8ea4e533b1708c05954464edbf39",
    "cross_cats_sorted": [
      "math.RA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2025-03-13T19:05:08Z",
    "title_canon_sha256": "a4d3a4845b221c1cfcf6ea4433c5d63b135fd9734c448681ee76ca6215b19e3e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.10816",
    "kind": "arxiv",
    "version": 3
  }
}