Pith Number

pith:HRXAP5YR

pith:2002:HRXAP5YRAX24FNNUIXJSP3PYDF

not attested not anchored not stored refs pending

The Holevo-Schumacher-Westmoreland Channel Capacity for a Class of Qudit Unital Channels

John A. Cortese

arxiv:quant-ph/0211093 v1 · 2002-11-15 · 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{HRXAP5YRAX24FNNUIXJSP3PYDF}

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	2026-05-18T03:24:20.249692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c6e07f71105f5c2b5b445d327edf8195b784924b0ce71f6dfc2b5a0db0313fb

Aliases

arxiv: quant-ph/0211093 · arxiv_version: quant-ph/0211093v1 · doi: 10.48550/arxiv.quant-ph/0211093 · pith_short_12: HRXAP5YRAX24 · pith_short_16: HRXAP5YRAX24FNNU · pith_short_8: HRXAP5YR

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/HRXAP5YRAX24FNNUIXJSP3PYDF \
  | 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: 3c6e07f71105f5c2b5b445d327edf8195b784924b0ce71f6dfc2b5a0db0313fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a972b1195d82685f0f0c241ee60c95b2d14471e1297286320427ab343b5459f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "quant-ph",
    "submitted_at": "2002-11-15T20:05:50Z",
    "title_canon_sha256": "76994efd5f99ba15c0040f72f4e9e281f5e6f0048a00d4292e27852fc0543b79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "quant-ph/0211093",
    "kind": "arxiv",
    "version": 1
  }
}