Pith Number

pith:XZNADNJ4

pith:2019:XZNADNJ4PUVMJTOKGJH33EUOPQ

not attested not anchored not stored refs pending

A More General Theory of Static Approximations for Conjunctive Queries

Miguel Romero, Pablo Barcel\'o, Thomas Zeume

arxiv:1904.00934 v1 · 2019-04-01 · cs.DB · cs.DM · 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{XZNADNJ4PUVMJTOKGJH33EUOPQ}

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	2026-05-17T23:49:44.831081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be5a01b53c7d2ac4cdca324fbd928e7c0ea4eaac44cc5bc9a76f2e682eb260db

Aliases

arxiv: 1904.00934 · arxiv_version: 1904.00934v1 · doi: 10.48550/arxiv.1904.00934 · pith_short_12: XZNADNJ4PUVM · pith_short_16: XZNADNJ4PUVMJTOK · pith_short_8: XZNADNJ4

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/XZNADNJ4PUVMJTOKGJH33EUOPQ \
  | 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: be5a01b53c7d2ac4cdca324fbd928e7c0ea4eaac44cc5bc9a76f2e682eb260db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5875223aac5442db1792ac3dd9626c967519680efe2eb580e8f65c67eb11f42",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2019-04-01T16:12:04Z",
    "title_canon_sha256": "5487f244664429d4671119f6f1f46e01516452af6e898bcda689a61587dc3464"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.00934",
    "kind": "arxiv",
    "version": 1
  }
}