Pith Number

pith:FTRACFKJ

pith:2017:FTRACFKJ5HXTKDHNOY4UELQ2UU

not attested not anchored not stored refs pending

Minimax estimation of qubit states with Bures risk

Anirudh Acharya, Madalin Guta

arxiv:1708.04941 v2 · 2017-08-16 · quant-ph · math-ph · math.MP · stat.AP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FTRACFKJ5HXTKDHNOY4UELQ2UU}

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	2026-05-17T23:57:03.294205Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce2011549e9ef350ced7639422e1aa504354c7873e232389b8e3fb6b8d31138

Aliases

arxiv: 1708.04941 · arxiv_version: 1708.04941v2 · doi: 10.48550/arxiv.1708.04941 · pith_short_12: FTRACFKJ5HXT · pith_short_16: FTRACFKJ5HXTKDHN · pith_short_8: FTRACFKJ

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/FTRACFKJ5HXTKDHNOY4UELQ2UU \
  | 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: 2ce2011549e9ef350ced7639422e1aa504354c7873e232389b8e3fb6b8d31138

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b629a2311c946c5ef19457b8fa48aec8e55d10ffd3975adadfce90caddf7f802",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP",
      "stat.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-08-16T15:32:38Z",
    "title_canon_sha256": "0fa3834d71d1d656bc597b86028b0cac585935a6c463c4a4197a8a49a4be7ba8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.04941",
    "kind": "arxiv",
    "version": 2
  }
}