Pith Number

pith:HWQDYCRN

pith:2026:HWQDYCRNWDBNN76UKRQVHDXLPG

not attested not anchored not stored refs pending

Irreducibility of Semigroup Morphisms

Daniel Reidenbach, Eva Foster, Paul C. Bell

arxiv:2603.15177 v2 · 2026-03-16 · 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{HWQDYCRNWDBNN76UKRQVHDXLPG}

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	2026-06-01T02:03:37.357464Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3da03c0a2db0c2d6ffd45461538eeb79a9b82bd893d446ecd40c524e19374a0a

Aliases

arxiv: 2603.15177 · arxiv_version: 2603.15177v2 · doi: 10.48550/arxiv.2603.15177 · pith_short_12: HWQDYCRNWDBN · pith_short_16: HWQDYCRNWDBNN76U · pith_short_8: HWQDYCRN

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/HWQDYCRNWDBNN76UKRQVHDXLPG \
  | 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: 3da03c0a2db0c2d6ffd45461538eeb79a9b82bd893d446ecd40c524e19374a0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d47dd80ef2e94792774e8e3c07aab70bf3ae1fb8b3880cd59e482150b7f10b0e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2026-03-16T12:11:52Z",
    "title_canon_sha256": "7f57d5cf78c457a8c5a57c67474700dbb251d066fa2304940f9a912ba0cab011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.15177",
    "kind": "arxiv",
    "version": 2
  }
}