Pith Number

pith:A47XYI6Y

pith:2020:A47XYI6YJRUDHRSO365FH5TLQE

not attested not anchored not stored refs pending

Sum-of-squares decompositions for a family of noncontextuality inequalities and self-testing of quantum devices

Debashis Saha, Rafael Santos, Remigiusz Augusiak

arxiv:2002.12216 v3 · 2020-02-27 · 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{A47XYI6YJRUDHRSO365FH5TLQE}

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	2026-07-05T04:01:54.337947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

073f7c23d84c6833c64edfba53f66b81026692589612234c99d37cfda17b43a2

Aliases

arxiv: 2002.12216 · arxiv_version: 2002.12216v3 · doi: 10.48550/arxiv.2002.12216 · pith_short_12: A47XYI6YJRUD · pith_short_16: A47XYI6YJRUDHRSO · pith_short_8: A47XYI6Y

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/A47XYI6YJRUDHRSO365FH5TLQE \
  | 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: 073f7c23d84c6833c64edfba53f66b81026692589612234c99d37cfda17b43a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0cfedc4f845160b7a2ef6311b69b0352b6004504d1a301243fb41c9e88752bc3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2020-02-27T16:01:53Z",
    "title_canon_sha256": "51b098e30b72901cb7749340385612d9114e0dfa1986f54d05ee2effe06ab737"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.12216",
    "kind": "arxiv",
    "version": 3
  }
}