Pith Number

pith:MXNXUWVF

pith:2025:MXNXUWVFV4HM7OCLMQVUWFVJTW

not attested not anchored not stored refs pending

Direct reconstruction of the quantum density matrix elements with classical shadow tomography

Yu Wang

arxiv:2505.15243 v1 · 2025-05-21 · 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{MXNXUWVFV4HM7OCLMQVUWFVJTW}

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	2026-07-05T11:06:42.608808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65db7a5aa5af0ecfb84b642b4b16a99d9abca420eeeddf9e6d7aacbd916a92a5

Aliases

arxiv: 2505.15243 · arxiv_version: 2505.15243v1 · doi: 10.48550/arxiv.2505.15243 · pith_short_12: MXNXUWVFV4HM · pith_short_16: MXNXUWVFV4HM7OCL · pith_short_8: MXNXUWVF

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/MXNXUWVFV4HM7OCLMQVUWFVJTW \
  | 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: 65db7a5aa5af0ecfb84b642b4b16a99d9abca420eeeddf9e6d7aacbd916a92a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94e54adcb6f819ab7d54ca533138298ee268bee7831ed3d3eef1323862f270ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-05-21T08:19:39Z",
    "title_canon_sha256": "cbfbc9c621a2562cff1c89681348a3d30efebd8be6f765d08a8a674a1b231528"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.15243",
    "kind": "arxiv",
    "version": 1
  }
}