Pith Number

pith:TEFWQSIL

pith:2019:TEFWQSILKLS3GDMRBBK7PZ7QAG

not attested not anchored not stored refs pending

Complexity Bounds for Relational Algebra over Document Spanners

Benny Kimelfeld, Dominik D. Freydenberger, Liat Peterfreund, Markus Kr\"oll

arxiv:1901.04182 v2 · 2019-01-14 · cs.DB

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TEFWQSILKLS3GDMRBBK7PZ7QAG}

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	2026-05-17T23:54:38.848103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

990b68490b52e5b30d910855f7e7f0018aa2d5d85f870ab453b8bc67becb95a0

Aliases

arxiv: 1901.04182 · arxiv_version: 1901.04182v2 · doi: 10.48550/arxiv.1901.04182 · pith_short_12: TEFWQSILKLS3 · pith_short_16: TEFWQSILKLS3GDMR · pith_short_8: TEFWQSIL

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/TEFWQSILKLS3GDMRBBK7PZ7QAG \
  | 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: 990b68490b52e5b30d910855f7e7f0018aa2d5d85f870ab453b8bc67becb95a0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7df975afe73ef26aaeff34d355cd7e1b01fdb8ac4367268837c05d9e29c314c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2019-01-14T08:38:24Z",
    "title_canon_sha256": "f71d95ddc727cda2a4c5aa02814f0a7e33c91923b3688d14cd51731de92ace2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.04182",
    "kind": "arxiv",
    "version": 2
  }
}