Pith Number

pith:5WYS3DA7

pith:2002:5WYS3DA7SP7NY23GFYWJDQTQLO

not attested not anchored not stored refs pending

Mean of continuous variables observable {\it via} measurement on single qubit

Pawel Horodecki

arxiv:quant-ph/0210163 v1 · 2002-10-23 · 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{5WYS3DA7SP7NY23GFYWJDQTQLO}

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	2026-07-04T16:36:11.908138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

edb12d8c1f93fedc6b662e2c91c2705bae29b26591e10f3d11a2c20b9065f471

Aliases

arxiv: quant-ph/0210163 · arxiv_version: quant-ph/0210163v1 · doi: 10.48550/arxiv.quant-ph/0210163 · pith_short_12: 5WYS3DA7SP7N · pith_short_16: 5WYS3DA7SP7NY23G · pith_short_8: 5WYS3DA7

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/5WYS3DA7SP7NY23GFYWJDQTQLO \
  | 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: edb12d8c1f93fedc6b662e2c91c2705bae29b26591e10f3d11a2c20b9065f471

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f8e5b138444c4b8890486d648fdb51ff1757908567ab7da104f3ad99edb61a65",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-10-23T20:42:33Z",
    "title_canon_sha256": "e56cfb21be2c4f0d34ab87dad95087782b22a0c83d791e4d73aa9c610d19d610"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0210163",
    "kind": "arxiv",
    "version": 1
  }
}