Pith Number

pith:JFCPFCZL

pith:2016:JFCPFCZLYNIN6KGXCOMDWQ3VHZ

not attested not anchored not stored refs pending

Slow and Ordinary Provability for Peano Arithmetic

Fedor Pakhomov, Paula Henk

arxiv:1602.01822 v2 · 2016-02-04 · math.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{JFCPFCZLYNIN6KGXCOMDWQ3VHZ}

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	2026-05-18T01:12:54.966592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4944f28b2bc350df28d713983b43753e5d7746139cb8080d02390a6e3a7de916

Aliases

arxiv: 1602.01822 · arxiv_version: 1602.01822v2 · doi: 10.48550/arxiv.1602.01822 · pith_short_12: JFCPFCZLYNIN · pith_short_16: JFCPFCZLYNIN6KGX · pith_short_8: JFCPFCZL

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/JFCPFCZLYNIN6KGXCOMDWQ3VHZ \
  | 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: 4944f28b2bc350df28d713983b43753e5d7746139cb8080d02390a6e3a7de916

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "979683250dc59e7c09d9a4c2f3962e66c54b155bbaf31fe7222cf560e755fe5e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-02-04T20:41:59Z",
    "title_canon_sha256": "fdea285c69b38385d12e99adb808da968fb35a49d6b4d3435df8a2ffc3e5c474"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.01822",
    "kind": "arxiv",
    "version": 2
  }
}