Pith Number

pith:53ZKYJGS

pith:2025:53ZKYJGSRR6VK3TYYCFSM76SW2

not attested not anchored not stored refs pending

Measuring Less to Learn More: Quadratic Speedup in learning Nonlinear Properties of Quantum Density Matrices

Xiao Yuan, You Zhou, Yukun Zhang, Yusen Wu

arxiv:2509.01571 v1 · 2025-09-01 · 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{53ZKYJGSRR6VK3TYYCFSM76SW2}

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

Information-Theoretic Lower Bounds for Approximating Monomials via Optimal Quantum Tsallis Entropy Estimation

Receipt and verification

First computed	2026-07-05T12:03:03.457552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eef2ac24d28c7d556e78c08b267fd2b693c3c12675b0bf94da85788d637f1ec8

Aliases

arxiv: 2509.01571 · arxiv_version: 2509.01571v1 · doi: 10.48550/arxiv.2509.01571 · pith_short_12: 53ZKYJGSRR6V · pith_short_16: 53ZKYJGSRR6VK3TY · pith_short_8: 53ZKYJGS

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/53ZKYJGSRR6VK3TYYCFSM76SW2 \
  | 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: eef2ac24d28c7d556e78c08b267fd2b693c3c12675b0bf94da85788d637f1ec8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7713b1560dbf2b5566131b875b211e5f97b901349c3e53e852c40dd6e75ee371",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-09-01T15:56:49Z",
    "title_canon_sha256": "32a29069a4c7da432d3113eb4862e95c198b5efe1ee6407a981fce79f6f8a76d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.01571",
    "kind": "arxiv",
    "version": 1
  }
}