Pith Number

pith:F4HX22N2

pith:2010:F4HX22N23HK2HCSH4HJNJLSZMJ

not attested not anchored not stored refs pending

The model checking problem for intuitionistic propositional logic with one variable is AC1-complete

Felix Weiss, Martin Mundhenk

arxiv:1012.3828 v3 · 2010-12-17 · cs.CC · 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{F4HX22N23HK2HCSH4HJNJLSZMJ}

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	2026-05-18T04:13:05.651114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f0f7d69bad9d5a38a47e1d2d4ae5962690367cdf17e7a716f162b68d3e05c82

Aliases

arxiv: 1012.3828 · arxiv_version: 1012.3828v3 · doi: 10.48550/arxiv.1012.3828 · pith_short_12: F4HX22N23HK2 · pith_short_16: F4HX22N23HK2HCSH · pith_short_8: F4HX22N2

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/F4HX22N23HK2HCSH4HJNJLSZMJ \
  | 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: 2f0f7d69bad9d5a38a47e1d2d4ae5962690367cdf17e7a716f162b68d3e05c82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b33a773e64f36c7f86744e4301e504d4940412747d2d60f991cf78da47da71a4",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2010-12-17T08:46:44Z",
    "title_canon_sha256": "63029cd99b9bcec984e600742ed9b55f75484712ba890a7fda5a12627423a6c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.3828",
    "kind": "arxiv",
    "version": 3
  }
}