Pith Number

pith:IBA2SFGA

pith:2016:IBA2SFGAWAYYU52SFQ6YWWSGRO

not attested not anchored not stored refs pending

Classifying the provably total set functions of KP and KP(P)

Jacob Cook, Michael Rathjen

arxiv:1610.02194 v1 · 2016-10-07 · 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{IBA2SFGAWAYYU52SFQ6YWWSGRO}

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	2026-05-18T01:02:58.137684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4041a914c0b0318a77522c3d8b5a468ba1e2bec00013b16c9dcd5ca908a1baa0

Aliases

arxiv: 1610.02194 · arxiv_version: 1610.02194v1 · doi: 10.48550/arxiv.1610.02194 · pith_short_12: IBA2SFGAWAYY · pith_short_16: IBA2SFGAWAYYU52S · pith_short_8: IBA2SFGA

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/IBA2SFGAWAYYU52SFQ6YWWSGRO \
  | 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: 4041a914c0b0318a77522c3d8b5a468ba1e2bec00013b16c9dcd5ca908a1baa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6de2bdf090d2b616a72493362fe929e190b8423ccfb8e9534925e7eaa43461d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-10-07T09:06:36Z",
    "title_canon_sha256": "d5edb22277fb4930f2db4b32b400fc238b139744b069fe043b038f07d3d3043d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.02194",
    "kind": "arxiv",
    "version": 1
  }
}