Pith Number

pith:UF64IKMJ

pith:2014:UF64IKMJXXPRCEPRANI3X4SQS4

not attested not anchored not stored refs pending

Undecidable propositional bimodal logics and one-variable first-order linear temporal logics with counting

Agi Kurucz, Christopher Hampson

arxiv:1407.1386 v3 · 2014-07-05 · 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{UF64IKMJXXPRCEPRANI3X4SQS4}

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	2026-05-18T01:35:20.688394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a17dc42989bddf1111f10351bbf250972a4a2e6c554f2728ebdde8f34d5176c2

Aliases

arxiv: 1407.1386 · arxiv_version: 1407.1386v3 · doi: 10.48550/arxiv.1407.1386 · pith_short_12: UF64IKMJXXPR · pith_short_16: UF64IKMJXXPRCEPR · pith_short_8: UF64IKMJ

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/UF64IKMJXXPRCEPRANI3X4SQS4 \
  | 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: a17dc42989bddf1111f10351bbf250972a4a2e6c554f2728ebdde8f34d5176c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8561b80d94004f72f289d542312b7cc21b5fecea8d6fda8f5008876e45f0092e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-07-05T10:45:41Z",
    "title_canon_sha256": "f5f087cbf5f78d11ef9c5a3d21fd6e1ca88e6a9fc4ec71bfc30a2098e78adce2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.1386",
    "kind": "arxiv",
    "version": 3
  }
}