Pith Number

pith:UHAYKU5M

pith:2012:UHAYKU5MOL44S5XILAQTPAXHFM

not attested not anchored not stored refs pending

Algorithmic Superactivation of Asymptotic Quantum Capacity of Zero-Capacity Quantum Channels

Laszlo Gyongyosi, Sandor Imre

arxiv:1207.4491 v3 · 2012-07-18 · 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{UHAYKU5MOL44S5XILAQTPAXHFM}

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	2026-05-18T03:47:00.664254Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1c18553ac72f9c976e858213782e72b394a58c0d65150797b6767c5c2b0b725

Aliases

arxiv: 1207.4491 · arxiv_version: 1207.4491v3 · doi: 10.48550/arxiv.1207.4491 · pith_short_12: UHAYKU5MOL44 · pith_short_16: UHAYKU5MOL44S5XI · pith_short_8: UHAYKU5M

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/UHAYKU5MOL44S5XILAQTPAXHFM \
  | 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: a1c18553ac72f9c976e858213782e72b394a58c0d65150797b6767c5c2b0b725

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e682fcf498cbeefbe50f9ffe84d82e39ff963419a83759637e46c0c5b81feed4",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-07-18T20:11:35Z",
    "title_canon_sha256": "d87e22599ed313738d64279722429ea1b7898565e83102e758f92cc4bbde809e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.4491",
    "kind": "arxiv",
    "version": 3
  }
}