Pith Number

pith:SAUZ56W2

pith:2012:SAUZ56W267OGT7NES6KCF56I2I

not attested not anchored not stored refs pending

A Necessary and Sufficient Condition for Entanglement Witness

Fabio Masillo

arxiv:1204.6052 v2 · 2012-04-26 · 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{SAUZ56W267OGT7NES6KCF56I2I}

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	2026-05-18T03:42:11.475599Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90299efadaf7dc69fda4979422f7c8d23f6c774ba9a159f0e064ffd1705c1b8f

Aliases

arxiv: 1204.6052 · arxiv_version: 1204.6052v2 · doi: 10.48550/arxiv.1204.6052 · pith_short_12: SAUZ56W267OG · pith_short_16: SAUZ56W267OGT7NE · pith_short_8: SAUZ56W2

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/SAUZ56W267OGT7NES6KCF56I2I \
  | 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: 90299efadaf7dc69fda4979422f7c8d23f6c774ba9a159f0e064ffd1705c1b8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3ea4d2343d0eae2431cfc17501c7426f6abdb2b054ba303b9358797ebc9a18e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-04-26T20:18:53Z",
    "title_canon_sha256": "d6acc2211b892423eae74faca846d3f1491611f010b34f283856905524642246"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6052",
    "kind": "arxiv",
    "version": 2
  }
}