Pith Number

pith:NP3I4CYD

pith:2013:NP3I4CYDENOWZXSJ7M4RTXYQWG

not attested not anchored not stored refs pending

A pedagogical overview of quantum discord

Kavan Modi

arxiv:1312.7676 v1 · 2013-12-30 · 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{NP3I4CYDENOWZXSJ7M4RTXYQWG}

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	2026-05-18T02:51:08.192194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6bf68e0b03235d6cde49fb3919df10b1b710769f782de51fa7bc0104ef9a95d6

Aliases

arxiv: 1312.7676 · arxiv_version: 1312.7676v1 · doi: 10.48550/arxiv.1312.7676 · pith_short_12: NP3I4CYDENOW · pith_short_16: NP3I4CYDENOWZXSJ · pith_short_8: NP3I4CYD

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/NP3I4CYDENOWZXSJ7M4RTXYQWG \
  | 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: 6bf68e0b03235d6cde49fb3919df10b1b710769f782de51fa7bc0104ef9a95d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e1d5a6d4cd6ea7bf0cac1298613c2a141e8efeed9b41037bd13d6d2c6a57fccd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2013-12-30T10:56:08Z",
    "title_canon_sha256": "dd241454d006250523b4aec2246d9bcf6d0b12a245783488accf22d828aaa57e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.7676",
    "kind": "arxiv",
    "version": 1
  }
}