Pith Number

pith:Y7O6VPRK

pith:2018:Y7O6VPRKTLVSJIAREX4T6MIPCS

not attested not anchored not stored refs pending

Quantum principal component analysis only achieves an exponential speedup because of its state preparation assumptions

Ewin Tang

arxiv:1811.00414 v3 · 2018-10-31 · cs.DS · cs.IR · cs.LG · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y7O6VPRKTLVSJIAREX4T6MIPCS}

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	2026-07-05T03:03:47.853328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7ddeabe2a9aeb24a01125f93f310f14bf4aa1e90b8956609d28dfb44f1fe964

Aliases

arxiv: 1811.00414 · arxiv_version: 1811.00414v3 · doi: 10.48550/arxiv.1811.00414 · pith_short_12: Y7O6VPRKTLVS · pith_short_16: Y7O6VPRKTLVSJIAR · pith_short_8: Y7O6VPRK

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/Y7O6VPRKTLVSJIAREX4T6MIPCS \
  | 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: c7ddeabe2a9aeb24a01125f93f310f14bf4aa1e90b8956609d28dfb44f1fe964

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e27756877a4776af4b6f736982fcce0d000fa29003321dca0ecf3a6812a19884",
    "cross_cats_sorted": [
      "cs.IR",
      "cs.LG",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-10-31T03:23:52Z",
    "title_canon_sha256": "6ff5c119fd2c4cd7c7115ce9b8cae6ad33892b7d73686eb2a4e6b1feaca06ea7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00414",
    "kind": "arxiv",
    "version": 3
  }
}