Pith Number

pith:ITZYINHZ

pith:1995:ITZYINHZUNWEOG6JOBSVC7QQYL

not attested not anchored not stored refs pending

Quantum Coding Theorem for Mixed States

Hoi-Kwong Lo

arxiv:quant-ph/9504004 v2 · 1995-04-04 · quant-ph · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ITZYINHZUNWEOG6JOBSVC7QQYL}

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	2026-05-18T01:37:53.501174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44f38434f9a36c471bc97065517e10c2e62eb39484359a7e59d52473d56c43b8

Aliases

arxiv: quant-ph/9504004 · arxiv_version: quant-ph/9504004v2 · doi: 10.48550/arxiv.quant-ph/9504004 · pith_short_12: ITZYINHZUNWE · pith_short_16: ITZYINHZUNWEOG6J · pith_short_8: ITZYINHZ

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/ITZYINHZUNWEOG6JOBSVC7QQYL \
  | 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: 44f38434f9a36c471bc97065517e10c2e62eb39484359a7e59d52473d56c43b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d073ab79f9156eb65f9106d31176e5cc32ee97daae4d8a96ee2600c868a0709",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "1995-04-04T20:40:25Z",
    "title_canon_sha256": "e990fc1b3eccf8a4ee88190412c773b4b2038c7a47af1299971c6f6d1ca5520f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/9504004",
    "kind": "arxiv",
    "version": 2
  }
}