Pith Number

pith:4DQVLWGU

pith:2017:4DQVLWGU5GJOTCO6UIYWWBSGGP

not attested not anchored not stored refs pending

Quantum Discord and entropic measures of quantum correlations: Optimization and behavior in finite $XY$ spin chains

M. Cerezo, N. Canosa, N. Gigena, R. Rossignoli

arxiv:1712.09670 v1 · 2017-12-27 · 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{4DQVLWGU5GJOTCO6UIYWWBSGGP}

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	2026-05-18T00:27:07.659121Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0e155d8d4e992e989dea2316b064633ece88855df173be847d58669d617bedc

Aliases

arxiv: 1712.09670 · arxiv_version: 1712.09670v1 · doi: 10.48550/arxiv.1712.09670 · pith_short_12: 4DQVLWGU5GJO · pith_short_16: 4DQVLWGU5GJOTCO6 · pith_short_8: 4DQVLWGU

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/4DQVLWGU5GJOTCO6UIYWWBSGGP \
  | 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: e0e155d8d4e992e989dea2316b064633ece88855df173be847d58669d617bedc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a68420f005184806559dd5df3a9b9e63c585bdb007ea994c5865ef2a938c57b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2017-12-27T20:24:15Z",
    "title_canon_sha256": "2bc0531382c2a4d9f7169fb0a6f1d1644e0fa990fd300433e60f85e7758cbf3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.09670",
    "kind": "arxiv",
    "version": 1
  }
}