Pith Number

pith:7DHNFGGV

pith:2022:7DHNFGGVBX2ZVMMX2YTZUG5QZC

not attested not anchored not stored refs pending

Quantum state tomography via non-convex Riemannian gradient descent

En-Jui Kuo, Jian-Feng Cai, Ming-Chien Hsu, Min-Hsiu Hsieh, Wei-Hsuan Yu

arxiv:2210.04717 v1 · 2022-10-10 · 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{7DHNFGGVBX2ZVMMX2YTZUG5QZC}

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	2026-07-05T05:04:56.046846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8ced298d50df59ab197d6279a1bb0c8a2657cff1146e4c6543ab4d0bb3f8abd

Aliases

arxiv: 2210.04717 · arxiv_version: 2210.04717v1 · doi: 10.48550/arxiv.2210.04717 · pith_short_12: 7DHNFGGVBX2Z · pith_short_16: 7DHNFGGVBX2ZVMMX · pith_short_8: 7DHNFGGV

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/7DHNFGGVBX2ZVMMX2YTZUG5QZC \
  | 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: f8ced298d50df59ab197d6279a1bb0c8a2657cff1146e4c6543ab4d0bb3f8abd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea5ca176dcc7a259c1e49ab165711f9119ca0cb5dd53b8cb867f2aae36071068",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-10-10T14:19:23Z",
    "title_canon_sha256": "d4d3ea24534c996a786869cb3c34e70c4e3d1d7389de86a1709849a67fd95897"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.04717",
    "kind": "arxiv",
    "version": 1
  }
}