Pith Number

pith:ECI5ORYT

pith:2014:ECI5ORYTI53SK7Z4F2JHRTFVOA

not attested not anchored not stored refs pending

On the permutationally invariant part of a density matrix and nonseparability of N-qubit states

Fengli Yan, S.J. van Enk, Ting Gao

arxiv:1401.4495 v3 · 2014-01-18 · 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{ECI5ORYTI53SK7Z4F2JHRTFVOA}

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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	2026-05-18T02:51:41.694627Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2091d747134777257f3c2e9278ccb5701b0d998d049adc666c062c0a9a383aea

Aliases

arxiv: 1401.4495 · arxiv_version: 1401.4495v3 · doi: 10.48550/arxiv.1401.4495 · pith_short_12: ECI5ORYTI53S · pith_short_16: ECI5ORYTI53SK7Z4 · pith_short_8: ECI5ORYT

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/ECI5ORYTI53SK7Z4F2JHRTFVOA \
  | 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: 2091d747134777257f3c2e9278ccb5701b0d998d049adc666c062c0a9a383aea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2367ac7983518e01891a951ce607d1dedf627a2072f18a2975836f772a17787",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-01-18T00:02:33Z",
    "title_canon_sha256": "e63ae8a4cdac86bf7400c2a2f1eb882e289004cb87365b331d7053321ae45dfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.4495",
    "kind": "arxiv",
    "version": 3
  }
}