Pith Number

pith:NITFQHSM

pith:2013:NITFQHSM7FL4UWW4CYQKRC6MEF

not attested not anchored not stored refs pending

Minimum Relative Entropy for Quantum Estimation: Feasibility and General Solution

Augusto Ferrante, Francesco Ticozzi, Mattia Zorzi

arxiv:1301.6658 v1 · 2013-01-28 · quant-ph · cs.IT · 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{NITFQHSM7FL4UWW4CYQKRC6MEF}

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	2026-05-18T03:35:14.735676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a26581e4cf957ca5adc1620a88bcc2160cbde2793bdf2c7e693b34a4362d5df

Aliases

arxiv: 1301.6658 · arxiv_version: 1301.6658v1 · doi: 10.48550/arxiv.1301.6658 · pith_short_12: NITFQHSM7FL4 · pith_short_16: NITFQHSM7FL4UWW4 · pith_short_8: NITFQHSM

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/NITFQHSM7FL4UWW4CYQKRC6MEF \
  | 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: 6a26581e4cf957ca5adc1620a88bcc2160cbde2793bdf2c7e693b34a4362d5df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfade1ff3ca554ec2939cac0b50b98f1696c298bb7e49f5ef155ab405d7e4a57",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-01-28T19:55:01Z",
    "title_canon_sha256": "c74960c6ecb8516b46ba3d8c2ec72777e5561d6ae6b219578c9e21ded9c8bd9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.6658",
    "kind": "arxiv",
    "version": 1
  }
}