Pith Number

pith:C4BIMLJI

pith:2018:C4BIMLJINVO5FMFMRDX6VUEJYJ

not attested not anchored not stored refs pending

Complexity of Scott Sentences

Charles McCoy, Julia Knight, Rachael Alvir

arxiv:1807.02715 v1 · 2018-07-07 · math.LO · math.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C4BIMLJINVO5FMFMRDX6VUEJYJ}

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	2026-05-18T00:11:16.218607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1702862d286d5dd2b0ac88efead089c27c67a5dc23dc1b6c2da2dea6fac56f94

Aliases

arxiv: 1807.02715 · arxiv_version: 1807.02715v1 · doi: 10.48550/arxiv.1807.02715 · pith_short_12: C4BIMLJINVO5 · pith_short_16: C4BIMLJINVO5FMFM · pith_short_8: C4BIMLJI

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/C4BIMLJINVO5FMFMRDX6VUEJYJ \
  | 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: 1702862d286d5dd2b0ac88efead089c27c67a5dc23dc1b6c2da2dea6fac56f94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "242416e882b64b3cbe25d96a19b5021673aba6e556f9b09dcf2ab2fa0daaec16",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-07-07T20:24:54Z",
    "title_canon_sha256": "1a6d9619194526f5a7bd342d8dfdaf1d0f71707b46d4fe3d26c067a19cf7d751"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.02715",
    "kind": "arxiv",
    "version": 1
  }
}