Pith Number

pith:JY6BOBYD

pith:1999:JY6BOBYDGOW66ATNU5MGOJCXOQ

not attested not anchored not stored refs pending

A better lower bound for quantum algorithms searching an ordered list

Andris Ambainis

arxiv:quant-ph/9902053 v1 · 1999-02-14 · quant-ph · cs.CC · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JY6BOBYDGOW66ATNU5MGOJCXOQ}

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	2026-07-04T14:47:24.086441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e3c17070333adef026da7586724577417400064505b15c5faeb613b078251c0

Aliases

arxiv: quant-ph/9902053 · arxiv_version: quant-ph/9902053v1 · doi: 10.48550/arxiv.quant-ph/9902053 · pith_short_12: JY6BOBYDGOW6 · pith_short_16: JY6BOBYDGOW66ATN · pith_short_8: JY6BOBYD

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/JY6BOBYDGOW66ATNU5MGOJCXOQ \
  | 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: 4e3c17070333adef026da7586724577417400064505b15c5faeb613b078251c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ec2a6247d199d140dd5e276a0ad3e099ac8d0aaf23f45fa437e8ba0f72cb3b5",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1999-02-14T01:20:11Z",
    "title_canon_sha256": "7a783f917c1fae97093af356ae9bc6fde35ccd4dfe88297188aee9b120173df7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9902053",
    "kind": "arxiv",
    "version": 1
  }
}