Pith Number

pith:IWQWPI3U

pith:2014:IWQWPI3U4NLIJZ5RBXKZWGE6CU

not attested not anchored not stored refs pending

Discrete Transfinite Computation

Philip Welch

arxiv:1409.5052 v2 · 2014-09-17 · math.LO · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWQWPI3U4NLIJZ5RBXKZWGE6CU}

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	2026-05-18T02:42:36.682807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45a167a374e35684e7b10dd59b189e153166a59e2991799793670b8a09ea2312

Aliases

arxiv: 1409.5052 · arxiv_version: 1409.5052v2 · doi: 10.48550/arxiv.1409.5052 · pith_short_12: IWQWPI3U4NLI · pith_short_16: IWQWPI3U4NLIJZ5R · pith_short_8: IWQWPI3U

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/IWQWPI3U4NLIJZ5RBXKZWGE6CU \
  | 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: 45a167a374e35684e7b10dd59b189e153166a59e2991799793670b8a09ea2312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53be9a778f0cafed509315b0dde77ab4ee58ee8992808eea6aed4734c1f87d8e",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-09-17T16:21:39Z",
    "title_canon_sha256": "998f9dd23f79b914196a0f3dfe60723cd244132bf0577e5e8613389e00aceb4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.5052",
    "kind": "arxiv",
    "version": 2
  }
}