Pith Number

pith:RMQ42535

pith:2018:RMQ425357UVWFO2DBJVDRKICCH

not attested not anchored not stored refs pending

Analytical Expression of Quantum Discord for Rank-2 Two-qubit States

Shao-Ming Fei, Xianqing Li-Jost, Xue-Na Zhu

arxiv:1808.00702 v1 · 2018-08-02 · 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{RMQ425357UVWFO2DBJVDRKICCH}

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	2026-05-18T00:09:03.607545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8b21cd777dfd2b62bb430a6a38a90211fddb7284527efa934d239c039ed7dfb7

Aliases

arxiv: 1808.00702 · arxiv_version: 1808.00702v1 · doi: 10.48550/arxiv.1808.00702 · pith_short_12: RMQ425357UVW · pith_short_16: RMQ425357UVWFO2D · pith_short_8: RMQ42535

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/RMQ425357UVWFO2DBJVDRKICCH \
  | 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: 8b21cd777dfd2b62bb430a6a38a90211fddb7284527efa934d239c039ed7dfb7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e631daf6a810c11b4fde492150fcb4f6ca083476d318634c693277925391c357",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2018-08-02T07:57:44Z",
    "title_canon_sha256": "5125742243415c163ecff2abde86ea03432a5409c8fa0cec85656c74c15eafd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.00702",
    "kind": "arxiv",
    "version": 1
  }
}