Pith Number

pith:HUBAGUJ7

pith:2026:HUBAGUJ7FTMLJ624EQWGJMV447

not attested not anchored not stored refs pending

Instance-optimal high-precision shadow tomography with few-copy measurements: A metrological approach

Senrui Chen, Sisi Zhou, Weiyuan Gong

arxiv:2602.04952 v1 · 2026-02-04 · quant-ph · 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{HUBAGUJ7FTMLJ624EQWGJMV447}

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

Better Pauli Channel Learning with Maximum Likelihood Estimation

Receipt and verification

First computed	2026-08-04T00:30:51.634242Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d0203513f2cd8b4fb5c242c64b2bce7c3ec0f09cb41ce0924f64eb98a984a21

Aliases

arxiv: 2602.04952 · arxiv_version: 2602.04952v1 · doi: 10.48550/arxiv.2602.04952 · pith_short_12: HUBAGUJ7FTML · pith_short_16: HUBAGUJ7FTMLJ624 · pith_short_8: HUBAGUJ7

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/HUBAGUJ7FTMLJ624EQWGJMV447 \
  | 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: 3d0203513f2cd8b4fb5c242c64b2bce7c3ec0f09cb41ce0924f64eb98a984a21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de92fbf595f23255f1e11b20d23f20bca8cfdd49c40797694803bd1ccd9bbb77",
    "cross_cats_sorted": [
      "cs.IT",
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-02-04T19:00:00Z",
    "title_canon_sha256": "3c62221d8dccbe8f53655ea0631e4ca19eda456ea99f0b1ac6882c17def59114"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.04952",
    "kind": "arxiv",
    "version": 1
  }
}