Pith Number

pith:KEDKWXZG

pith:2011:KEDKWXZGNNPWUFPHJVIMMVFDDP

not attested not anchored not stored refs pending

Detecting the quantum discord of an unknown state by a single observable

Chengjie Zhang, C.H. Oh, Qing Chen, Sixia Yu

arxiv:1101.5075 v3 · 2011-01-26 · 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{KEDKWXZGNNPWUFPHJVIMMVFDDP}

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	2026-05-18T02:03:21.966526Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5106ab5f266b5f6a15e74d50c654a31bd876dad776612ebf2a2157b611281f07

Aliases

arxiv: 1101.5075 · arxiv_version: 1101.5075v3 · doi: 10.48550/arxiv.1101.5075 · pith_short_12: KEDKWXZGNNPW · pith_short_16: KEDKWXZGNNPWUFPH · pith_short_8: KEDKWXZG

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/KEDKWXZGNNPWUFPHJVIMMVFDDP \
  | 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: 5106ab5f266b5f6a15e74d50c654a31bd876dad776612ebf2a2157b611281f07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9843080d4221b5cf915de4796fbc36570a64001f32dbee5473c40fec89f5f18",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2011-01-26T14:55:05Z",
    "title_canon_sha256": "161eb5530afb0c43e05fa97bd16c7d794c50dc3f924c67f271afad1a995c2a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.5075",
    "kind": "arxiv",
    "version": 3
  }
}