Pith Number

pith:MMYCNSO5

pith:2013:MMYCNSO5WDBOQ36PJ5K2KSR424

not attested not anchored not stored refs pending

Sudden change of quantum discord for a system of two qubits

Felipe F. Fanchini, Goktug Karpat, Jo\~ao P. G. Pinto

arxiv:1309.7945 v1 · 2013-09-30 · 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{MMYCNSO5WDBOQ36PJ5K2KSR424}

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	2026-05-18T03:11:47.749583Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

633026c9ddb0c2e86fcf4f55a54a3cd7215bc645164d2289462f5aee59fd86ac

Aliases

arxiv: 1309.7945 · arxiv_version: 1309.7945v1 · doi: 10.48550/arxiv.1309.7945 · pith_short_12: MMYCNSO5WDBO · pith_short_16: MMYCNSO5WDBOQ36P · pith_short_8: MMYCNSO5

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/MMYCNSO5WDBOQ36PJ5K2KSR424 \
  | 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: 633026c9ddb0c2e86fcf4f55a54a3cd7215bc645164d2289462f5aee59fd86ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "94a90e855baba54f9bed471630ece641e4f682ae5ba49f3b2e301fb41c602c33",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-09-30T18:06:21Z",
    "title_canon_sha256": "f3d5e22d8468d261cc6dbc3eb5e8bf5ffcb02949b9fc743e2a1ff56232b60251"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.7945",
    "kind": "arxiv",
    "version": 1
  }
}