Pith Number

pith:SQ5322UO

pith:2016:SQ5322UOWTUKKDVLLNGBBYHDYB

not attested not anchored not stored refs pending

Reverse mathematics of the relativised fast growing hierarchy

Florian Pelupessy

arxiv:1608.05160 v1 · 2016-08-18 · 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{SQ5322UOWTUKKDVLLNGBBYHDYB}

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	2026-05-18T01:08:31.758693Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

943bbd6a8eb4e8a50eab5b4c10e0e3c05cbf61e427b61a42b44d6f5e7b6d9092

Aliases

arxiv: 1608.05160 · arxiv_version: 1608.05160v1 · doi: 10.48550/arxiv.1608.05160 · pith_short_12: SQ5322UOWTUK · pith_short_16: SQ5322UOWTUKKDVL · pith_short_8: SQ5322UO

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/SQ5322UOWTUKKDVLLNGBBYHDYB \
  | 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: 943bbd6a8eb4e8a50eab5b4c10e0e3c05cbf61e427b61a42b44d6f5e7b6d9092

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85836f263d7cf97e80d471867a4bd3d7137979efee5409c27d0c19c2be24967c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-08-18T02:56:51Z",
    "title_canon_sha256": "2a192a4b03b2e08576f3c07752b41a6d4f8b8df68c1611a53a6b377acc64c35b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.05160",
    "kind": "arxiv",
    "version": 1
  }
}