Pith Number

pith:TOHU3A3V

pith:2017:TOHU3A3VYTEGTXCV3VLIZ4BCUZ

not attested not anchored not stored refs pending

On Generalizing Decidable Standard Prefix Classes of First-Order Logic

Marco Voigt

arxiv:1706.03949 v1 · 2017-06-13 · 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{TOHU3A3VYTEGTXCV3VLIZ4BCUZ}

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	2026-05-18T00:42:27.899589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b8f4d8375c4c869dc55dd568cf022a6696b60f0aa894d7e22407b06c227dc89

Aliases

arxiv: 1706.03949 · arxiv_version: 1706.03949v1 · doi: 10.48550/arxiv.1706.03949 · pith_short_12: TOHU3A3VYTEG · pith_short_16: TOHU3A3VYTEGTXCV · pith_short_8: TOHU3A3V

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/TOHU3A3VYTEGTXCV3VLIZ4BCUZ \
  | 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: 9b8f4d8375c4c869dc55dd568cf022a6696b60f0aa894d7e22407b06c227dc89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c69ab8d33051653302810e9422211fa0ce269f216f338a08647b102ff06fe327",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-06-13T08:20:14Z",
    "title_canon_sha256": "092988a4856f91da7ec49cc160f695c98d2464873c11fc3e568ce854e9888874"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.03949",
    "kind": "arxiv",
    "version": 1
  }
}