Pith Number

pith:6WZWRDDZ

pith:2022:6WZWRDDZ4OQWMAMVLFPWB25P54

not attested not anchored not stored refs pending

Lower Bounds for Learning Quantum States with Single-Copy Measurements

Angus Lowe, Ashwin Nayak

arxiv:2207.14438 v3 · 2022-07-29 · quant-ph · cs.CC · cs.IT · cs.LG · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6WZWRDDZ4OQWMAMVLFPWB25P54}

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.

Cited by

1 paper in Pith

Fast quantum measurement tomography with optimal error bounds

Receipt and verification

First computed	2026-07-05T11:19:17.379626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5b3688c79e3a1660195595f60ebafef247d88842bd6b205a610bb8c6f79ab8f

Aliases

arxiv: 2207.14438 · arxiv_version: 2207.14438v3 · doi: 10.48550/arxiv.2207.14438 · pith_short_12: 6WZWRDDZ4OQW · pith_short_16: 6WZWRDDZ4OQWMAMV · pith_short_8: 6WZWRDDZ

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/6WZWRDDZ4OQWMAMVLFPWB25P54 \
  | 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: f5b3688c79e3a1660195595f60ebafef247d88842bd6b205a610bb8c6f79ab8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5ef24a823e0a460780309f7af4c8128fcabb9fd9b7ee07dc68a3bdd3d2e39114",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.IT",
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-07-29T02:26:08Z",
    "title_canon_sha256": "db058c14dfc89a41cd8ef39536d1175ba9decc5c0b58dc8659102ae9c8cbb727"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.14438",
    "kind": "arxiv",
    "version": 3
  }
}