Pith Number

pith:HH3KMRTD

pith:2018:HH3KMRTDKOITIFW4AFQP3KWIOD

not attested not anchored not stored refs pending

Uncertainty relations and information loss for spin-1/2 measurements

Alberto Barchielli, Matteo Gregoratti

arxiv:1805.03919 v1 · 2018-05-10 · 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{HH3KMRTDKOITIFW4AFQP3KWIOD}

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	2026-05-18T00:16:15.764885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39f6a6466353913416dc0160fdaac870cd80e3f02ffeb669a3aa6634f8ec3d4d

Aliases

arxiv: 1805.03919 · arxiv_version: 1805.03919v1 · doi: 10.48550/arxiv.1805.03919 · pith_short_12: HH3KMRTDKOIT · pith_short_16: HH3KMRTDKOITIFW4 · pith_short_8: HH3KMRTD

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/HH3KMRTDKOITIFW4AFQP3KWIOD \
  | 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: 39f6a6466353913416dc0160fdaac870cd80e3f02ffeb669a3aa6634f8ec3d4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15a0cd6cc5895cd3b5209db8e27ed737cf4cbe3b7fe0d0fccb2bfddd92f77fce",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-05-10T10:28:38Z",
    "title_canon_sha256": "200472f79545d28c746ec3da518333e1ca35ee1a2e7be9632075189c3d94767c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.03919",
    "kind": "arxiv",
    "version": 1
  }
}