Pith Number

pith:5SLY3YX4

pith:2008:5SLY3YX4TTFL72NTHN7ZS2M2PJ

not attested not anchored not stored refs pending

Novel Schemes for Directly Measuring Entanglement of General States

Jianming Cai, Wei Song

arxiv:0804.2246 v3 · 2008-04-14 · 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{5SLY3YX4TTFL72NTHN7ZS2M2PJ}

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.

Cited by

1 paper in Pith

Singular value transformation for unknown quantum channels

Receipt and verification

First computed	2026-07-04T15:16:14.405431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec978de2fc9ccabfe9b33b7f99699a7a43c68e0af1143f1658b725f649bea7f1

Aliases

arxiv: 0804.2246 · arxiv_version: 0804.2246v3 · doi: 10.48550/arxiv.0804.2246 · pith_short_12: 5SLY3YX4TTFL · pith_short_16: 5SLY3YX4TTFL72NT · pith_short_8: 5SLY3YX4

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/5SLY3YX4TTFL72NTHN7ZS2M2PJ \
  | 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: ec978de2fc9ccabfe9b33b7f99699a7a43c68e0af1143f1658b725f649bea7f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61a99ad2acddef76ebcc5d7e5053a91bb3b15eb89f3d192b3a84d184e7c78036",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2008-04-14T19:36:24Z",
    "title_canon_sha256": "247863e624364d2ca375a1c7d7b030d46a8dd5944ae05dd3c4b7c46691c0754a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.2246",
    "kind": "arxiv",
    "version": 3
  }
}