Pith Number

pith:URHSIPND

pith:2012:URHSIPNDWIZWRAKBQC4U3ET6RJ

not attested not anchored not stored refs pending

The entanglement or separability of mixed quantum states as a matter of the choice of observables

Iacopo Pozzana

arxiv:1205.3340 v1 · 2012-05-15 · quant-ph · gr-qc · hep-th

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{URHSIPNDWIZWRAKBQC4U3ET6RJ}

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	2026-05-18T03:55:22.953592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a44f243da3b23368814180b94d927e8a6a6d68f9a6495db50e59e4c3ba705eef

Aliases

arxiv: 1205.3340 · arxiv_version: 1205.3340v1 · doi: 10.48550/arxiv.1205.3340 · pith_short_12: URHSIPNDWIZW · pith_short_16: URHSIPNDWIZWRAKB · pith_short_8: URHSIPND

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/URHSIPNDWIZWRAKBQC4U3ET6RJ \
  | 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: a44f243da3b23368814180b94d927e8a6a6d68f9a6495db50e59e4c3ba705eef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7babe08d57571ab4f9b56e7c23fb99bb65efee8063c37818e4bc97162e578c9",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-05-15T12:23:22Z",
    "title_canon_sha256": "d4b5a74aa1cbc918b00c5d3db11c359b058419b185b21bd5787170ae52e74571"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.3340",
    "kind": "arxiv",
    "version": 1
  }
}