Pith Number

pith:SKTIPNZW

pith:2006:SKTIPNZWTXSRIFXWLBTDU5CSFQ

not attested not anchored not stored refs pending

On the complexity of XPath containment in the presence of disjunction, DTDs, and variables

Frank Neven, Thomas Schwentick

arxiv:cs/0606065 v4 · 2006-06-14 · cs.DB · 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{SKTIPNZWTXSRIFXWLBTDU5CSFQ}

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	2026-05-18T00:53:03.369243Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92a687b7369de51416f658663a74522c2615beb2011074e2ca8a1711230d41b5

Aliases

arxiv: cs/0606065 · arxiv_version: cs/0606065v4 · doi: 10.48550/arxiv.cs/0606065 · pith_short_12: SKTIPNZWTXSR · pith_short_16: SKTIPNZWTXSRIFXW · pith_short_8: SKTIPNZW

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/SKTIPNZWTXSRIFXWLBTDU5CSFQ \
  | 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: 92a687b7369de51416f658663a74522c2615beb2011074e2ca8a1711230d41b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8290a435895107163320c73fc7a8955580b56dc104c13ee64637e98b9577428",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "",
    "primary_cat": "cs.DB",
    "submitted_at": "2006-06-14T09:49:17Z",
    "title_canon_sha256": "58e735ea313d5b35f15bb1fa7f25ae565443861375493bf6d511333ad13d9f91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0606065",
    "kind": "arxiv",
    "version": 4
  }
}