Pith Number

pith:CM33C6LH

pith:2015:CM33C6LHFFSISLVP47HPD2GWYQ

not attested not anchored not stored refs pending

Splitting methods in algebraic logic: Proving results on non-atom-canonicity, non-finite axiomatizability and non-first oder definability for cylindric and relation algebras

Tarek Sayed Ahmed

arxiv:1503.02189 v1 · 2015-03-07 · 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{CM33C6LHFFSISLVP47HPD2GWYQ}

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	2026-05-18T02:25:25.660977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1337b179672964892eafe7cef1e8d6c40f83879388f357f77c22371bc03daea9

Aliases

arxiv: 1503.02189 · arxiv_version: 1503.02189v1 · doi: 10.48550/arxiv.1503.02189 · pith_short_12: CM33C6LHFFSI · pith_short_16: CM33C6LHFFSISLVP · pith_short_8: CM33C6LH

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/CM33C6LHFFSISLVP47HPD2GWYQ \
  | 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: 1337b179672964892eafe7cef1e8d6c40f83879388f357f77c22371bc03daea9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbfa12f30441988525f2d329b1e2c70fbbbb12ef7b7a036238d78d278a632e03",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-03-07T16:52:07Z",
    "title_canon_sha256": "2df555e8527d7aad59006ed0b7b27e978f5cc412bb5c512a5d2793583b0cf548"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02189",
    "kind": "arxiv",
    "version": 1
  }
}