Pith Number

pith:Q6SHZ5RT

pith:2016:Q6SHZ5RTDUQTFMV2LYJW2ZEE4P

not attested not anchored not stored refs pending

Non-convexity of private capacity and classical environment-assisted capacity of a quantum channel

David Elkouss, Sergii Strelchuk

arxiv:1604.07974 v3 · 2016-04-27 · quant-ph · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q6SHZ5RTDUQTFMV2LYJW2ZEE4P}

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	2026-05-18T01:01:24.108722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87a47cf6331d2132b2ba5e136d6484e3e1a4d8fbaa9a9bf4c28a0aed14289df8

Aliases

arxiv: 1604.07974 · arxiv_version: 1604.07974v3 · doi: 10.48550/arxiv.1604.07974 · pith_short_12: Q6SHZ5RTDUQT · pith_short_16: Q6SHZ5RTDUQTFMV2 · pith_short_8: Q6SHZ5RT

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/Q6SHZ5RTDUQTFMV2LYJW2ZEE4P \
  | 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: 87a47cf6331d2132b2ba5e136d6484e3e1a4d8fbaa9a9bf4c28a0aed14289df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1403815b4bed0c9e53939288d657ef9a143d16159668906fc410ad70f9cde5b6",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2016-04-27T08:35:54Z",
    "title_canon_sha256": "0a2c2a117dcb944257726a672096b0c5c6d8902aeffcd1483a465d545cb7fc74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.07974",
    "kind": "arxiv",
    "version": 3
  }
}