Pith Number

pith:WQJOE7R5

pith:2016:WQJOE7R5OOR4J357P7NLAJ2EY6

not attested not anchored not stored refs pending

On Higher Order Query Languages which on Relational Databases Collapse to Second Order Logic

Flavio Ferrarotti, Jos\'e Mar\'ia Turull-Torres, Loredana Tec

arxiv:1612.03155 v1 · 2016-12-09 · 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{WQJOE7R5OOR4J357P7NLAJ2EY6}

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	2026-05-18T00:55:26.247911Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b412e27e3d73a3c4efbf7fdab02744c7bf8463fe17c5a51db79322ebb22222c5

Aliases

arxiv: 1612.03155 · arxiv_version: 1612.03155v1 · doi: 10.48550/arxiv.1612.03155 · pith_short_12: WQJOE7R5OOR4 · pith_short_16: WQJOE7R5OOR4J357 · pith_short_8: WQJOE7R5

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/WQJOE7R5OOR4J357P7NLAJ2EY6 \
  | 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: b412e27e3d73a3c4efbf7fdab02744c7bf8463fe17c5a51db79322ebb22222c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9eb1c574f8f175a86336e09b450f2c54d8fa104672942cd17c069bb27181b26",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-12-09T20:32:24Z",
    "title_canon_sha256": "efb4a64e2a5b72510321ee81745f2ba78377ac250d15fb7b019cab11dc9f0a01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.03155",
    "kind": "arxiv",
    "version": 1
  }
}