Pith Number

pith:A3MLFZI2

pith:2009:A3MLFZI2DCKFPVLISDRLL7D3WT

not attested not anchored not stored refs pending

Optimal two-copy discrimination of quantum measurements

Jaromir Fiurasek, Michal Micuda

arxiv:0909.2940 v1 · 2009-09-16 · 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{A3MLFZI2DCKFPVLISDRLL7D3WT}

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	2026-05-18T02:11:47.480930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06d8b2e51a189457d56890e2b5fc7bb4f402c194d63f6078d4aec22cbeb819b2

Aliases

arxiv: 0909.2940 · arxiv_version: 0909.2940v1 · doi: 10.48550/arxiv.0909.2940 · pith_short_12: A3MLFZI2DCKF · pith_short_16: A3MLFZI2DCKFPVLI · pith_short_8: A3MLFZI2

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/A3MLFZI2DCKFPVLISDRLL7D3WT \
  | 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: 06d8b2e51a189457d56890e2b5fc7bb4f402c194d63f6078d4aec22cbeb819b2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9250c9c7923875576d24ad7213d5ec5e6ca4611b68242001cea134a87ec0a36f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2009-09-16T07:29:45Z",
    "title_canon_sha256": "87dd64a416ad4cdbab8ee7a08c25434b71626fbd7a2d7c53260262e6cfa0febe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.2940",
    "kind": "arxiv",
    "version": 1
  }
}