Pith Number

pith:TYYMCW5G

pith:2025:TYYMCW5G2ZGHDVSG6VOTOC5CYG

not attested not anchored not stored refs pending

QCardEst/QCardCorr: Quantum Cardinality Estimation and Correction

Jinghua Groppe, Sven Groppe, Tobias Winker

arxiv:2509.08817 v1 · 2025-09-10 · quant-ph · cs.AI · cs.DB · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TYYMCW5G2ZGHDVSG6VOTOC5CYG}

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	2026-07-05T12:08:36.880545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9e30c15ba6d64c71d646f55d370ba2c18b6f5b4c783ddc6e3172c6f75bb18853

Aliases

arxiv: 2509.08817 · arxiv_version: 2509.08817v1 · doi: 10.48550/arxiv.2509.08817 · pith_short_12: TYYMCW5G2ZGH · pith_short_16: TYYMCW5G2ZGHDVSG · pith_short_8: TYYMCW5G

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/TYYMCW5G2ZGHDVSG6VOTOC5CYG \
  | 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: 9e30c15ba6d64c71d646f55d370ba2c18b6f5b4c783ddc6e3172c6f75bb18853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a636b3374105e42dbf7f8e97ef740502df7a1b378e44c77c2edc93f721b9c92a",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.DB",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-10T17:49:06Z",
    "title_canon_sha256": "762306a396464099f2f9a627578b4e7c3774676a9a207b9870b56d5a1b59f7c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.08817",
    "kind": "arxiv",
    "version": 1
  }
}