Pith Number

pith:EUVJWPXS

pith:2012:EUVJWPXSHA4TNRQRGOXYOFQ3RW

not attested not anchored not stored refs pending

Predominance of entanglement of formation over quantum discord under quantum channels

Steve Campbell

arxiv:1207.6562 v2 · 2012-07-27 · 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{EUVJWPXSHA4TNRQRGOXYOFQ3RW}

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	2026-05-18T02:21:07.953877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

252a9b3ef2383936c61133af87161b8d8d5822bdc2353b906edcddcad217e1ff

Aliases

arxiv: 1207.6562 · arxiv_version: 1207.6562v2 · doi: 10.48550/arxiv.1207.6562 · pith_short_12: EUVJWPXSHA4T · pith_short_16: EUVJWPXSHA4TNRQR · pith_short_8: EUVJWPXS

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/EUVJWPXSHA4TNRQRGOXYOFQ3RW \
  | 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: 252a9b3ef2383936c61133af87161b8d8d5822bdc2353b906edcddcad217e1ff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbc62e2dd2eabba2b2111de1f11e18da8a7c4320c3af74713e5e843d048ed2c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-07-27T14:53:07Z",
    "title_canon_sha256": "896c7c1e00b4d2d7c82fdffff8307acf5a29cb7a8ea8802ee409cef24e7c8e25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6562",
    "kind": "arxiv",
    "version": 2
  }
}