Pith Number

pith:VXLQ3DMB

pith:2024:VXLQ3DMB2XC5YCAZFEU75FFRWN

not attested not anchored not stored refs pending

Biased Estimator Channels for Classical Shadows

Adrian Chapman, B\'alint Koczor, Hamza Jnane, Zhenyu Cai

arxiv:2402.09511 v2 · 2024-02-14 · 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{VXLQ3DMB2XC5YCAZFEU75FFRWN}

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

Classical Shadows with Improved Median-of-Means Estimation

Receipt and verification

First computed	2026-07-05T10:42:57.297574Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

add70d8d81d5c5dc08192929fe94b1b349f6946a13f4c0b66cfc0fa8f70658ff

Aliases

arxiv: 2402.09511 · arxiv_version: 2402.09511v2 · doi: 10.48550/arxiv.2402.09511 · pith_short_12: VXLQ3DMB2XC5 · pith_short_16: VXLQ3DMB2XC5YCAZ · pith_short_8: VXLQ3DMB

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/VXLQ3DMB2XC5YCAZFEU75FFRWN \
  | 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: add70d8d81d5c5dc08192929fe94b1b349f6946a13f4c0b66cfc0fa8f70658ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7c4c07eded049d87de657442112d59f28e5c04db5459aab644397c6d9e07069",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2024-02-14T19:00:01Z",
    "title_canon_sha256": "68cffc9fb4caa45dc69868ccdaaae04792a5a349ddc8c6826ede3fcafd51e46d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.09511",
    "kind": "arxiv",
    "version": 2
  }
}