Pith Number

pith:A3PEA6KI

pith:2008:A3PEA6KIHZOJPU3PA7XI445F3G

not attested not anchored not stored refs pending

Optimal quantum multi-parameter estimation and application to dipole- and exchange-coupled qubits

K. Birgitta Whaley, Kevin C. Young, Mohan Sarovar, Robert Kosut

arxiv:0812.4635 v3 · 2008-12-26 · 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{A3PEA6KIHZOJPU3PA7XI445F3G}

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	2026-05-18T03:24:42.514168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06de4079483e5c97d36f07ee8e73a5d9baaf1848019dd3adc9d1898a3538e739

Aliases

arxiv: 0812.4635 · arxiv_version: 0812.4635v3 · doi: 10.48550/arxiv.0812.4635 · pith_short_12: A3PEA6KIHZOJ · pith_short_16: A3PEA6KIHZOJPU3P · pith_short_8: A3PEA6KI

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/A3PEA6KIHZOJPU3PA7XI445F3G \
  | 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: 06de4079483e5c97d36f07ee8e73a5d9baaf1848019dd3adc9d1898a3538e739

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c542b5ddb7f5e35cb3b7c45024c7450e155d0a368f21e7fb43f774862d921eec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-12-26T01:30:49Z",
    "title_canon_sha256": "e027c723d8611005e800caaef6a6f02fb1fea8201654b423d8ea9075a93606a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.4635",
    "kind": "arxiv",
    "version": 3
  }
}