Pith Number

pith:RQSPGAMO

pith:2005:RQSPGAMOJMHALY4ASFN2TUL3LA

not attested not anchored not stored refs pending

A new quantum lower bound method, with an application to strong direct product theorem for quantum search

Andris Ambainis

arxiv:quant-ph/0508200 v2 · 2005-08-26 · quant-ph · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RQSPGAMOJMHALY4ASFN2TUL3LA}

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	2026-07-04T14:47:01.956076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c24f3018e4b0e05e380915ba9d17b583438236c4956ba3d9045d8b355204b0c

Aliases

arxiv: quant-ph/0508200 · arxiv_version: quant-ph/0508200v2 · doi: 10.48550/arxiv.quant-ph/0508200 · pith_short_12: RQSPGAMOJMHA · pith_short_16: RQSPGAMOJMHALY4A · pith_short_8: RQSPGAMO

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/RQSPGAMOJMHALY4ASFN2TUL3LA \
  | 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: 8c24f3018e4b0e05e380915ba9d17b583438236c4956ba3d9045d8b355204b0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48cbdc9dd8de2eae391cd6574191289f1bc1b3faec43978c4b1879ccdf70c0ff",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2005-08-26T16:28:57Z",
    "title_canon_sha256": "4b2e33a2e01712dd7fbad824ef5546433284a5b83ceec7826d71a93980dbc056"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0508200",
    "kind": "arxiv",
    "version": 2
  }
}