Pith Number

pith:CMOYEYP3

pith:2015:CMOYEYP3FUQHU3IBQVEV4URILR

not attested not anchored not stored refs pending

Weak Godel's incompleteness property for some decidable versions of first order logic

Mohamed Khaled

arxiv:1511.05221 v1 · 2015-11-16 · 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{CMOYEYP3FUQHU3IBQVEV4URILR}

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	2026-05-18T00:12:02.706334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

131d8261fb2d207a6d0185495e52285c7afc9f2356f3be3f03e5f70591896227

Aliases

arxiv: 1511.05221 · arxiv_version: 1511.05221v1 · doi: 10.48550/arxiv.1511.05221 · pith_short_12: CMOYEYP3FUQH · pith_short_16: CMOYEYP3FUQHU3IB · pith_short_8: CMOYEYP3

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/CMOYEYP3FUQHU3IBQVEV4URILR \
  | 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: 131d8261fb2d207a6d0185495e52285c7afc9f2356f3be3f03e5f70591896227

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3118853aa72aa45f32914c07239d0b67091cdbcfaa1ccc65afafae12f521e777",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-11-16T23:38:54Z",
    "title_canon_sha256": "435e1614c559a2fdefa8c18be024f371c358dbc4757a3047bcbe6aa039a90b45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05221",
    "kind": "arxiv",
    "version": 1
  }
}