Pith Number

pith:V54KEF2K

pith:2019:V54KEF2KNNROYKBQ6GTMPAZHVM

not attested not anchored not stored refs pending

A Gentzen-style monadic translation of G\"odel's System T

Chuangjie Xu

arxiv:1908.05979 v2 · 2019-08-16 · cs.LO · cs.PL · 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{V54KEF2KNNROYKBQ6GTMPAZHVM}

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	2026-07-05T01:00:13.546530Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af78a2174a6b62ec2830f1a6c78327ab2494418370c59e6e22c08e9b36c32ded

Aliases

arxiv: 1908.05979 · arxiv_version: 1908.05979v2 · doi: 10.48550/arxiv.1908.05979 · pith_short_12: V54KEF2KNNRO · pith_short_16: V54KEF2KNNROYKBQ · pith_short_8: V54KEF2K

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/V54KEF2KNNROYKBQ6GTMPAZHVM \
  | 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: af78a2174a6b62ec2830f1a6c78327ab2494418370c59e6e22c08e9b36c32ded

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "612d1e6d30d243e18e73842e29d4cacd611087b74473df9ccb4468ec0b301739",
    "cross_cats_sorted": [
      "cs.PL",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-08-16T14:04:35Z",
    "title_canon_sha256": "1b4cfed4c3fd25100c49d863ff11befc7ca40a9ef4709b3925561ef02d34093c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05979",
    "kind": "arxiv",
    "version": 2
  }
}