Pith Number

pith:YXKUDHBA

pith:2013:YXKUDHBAZD6O5QJJGHA5F4H2MC

not attested not anchored not stored refs pending

Progress on Quantum Discord of Two Qubit states: Optimization and Upper Bound

Fahimeh S. Mousavi, Hamidreza Mohammadi, S. Javad Akhtarshenas, Vahid Nassajpour

arxiv:1304.3914 v2 · 2013-04-14 · 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{YXKUDHBAZD6O5QJJGHA5F4H2MC}

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	2026-05-18T01:17:01.477149Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c5d5419c20c8fceec12931c1d2f0fa6094d6c1e92469ab580883dcddfc2e8d50

Aliases

arxiv: 1304.3914 · arxiv_version: 1304.3914v2 · doi: 10.48550/arxiv.1304.3914 · pith_short_12: YXKUDHBAZD6O · pith_short_16: YXKUDHBAZD6O5QJJ · pith_short_8: YXKUDHBA

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/YXKUDHBAZD6O5QJJGHA5F4H2MC \
  | 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: c5d5419c20c8fceec12931c1d2f0fa6094d6c1e92469ab580883dcddfc2e8d50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "06315d4bbe840ec4e79ff16a20d1eee2451ef3e939b264660b7efbbb76dede6e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-04-14T13:05:47Z",
    "title_canon_sha256": "41b3d950445b5398d75fbde932435cd62fafe702bf8e0ce6941e17477c23cb37"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.3914",
    "kind": "arxiv",
    "version": 2
  }
}