Pith Number

pith:7QCVUKNR

pith:2023:7QCVUKNRAE6C3RXFEA6L3EDPJW

not attested not anchored not stored refs pending

Classifying Linear Matrix Inequalities via Abstract Operator Systems

Martin Berger, Tim Netzer, Tom Drescher

arxiv:2301.11054 v1 · 2023-01-26 · math.FA · math.AG · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7QCVUKNRAE6C3RXFEA6L3EDPJW}

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	2026-07-05T05:36:09.796184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc055a29b1013c2dc6e5203cbd906f4d904056ab85130352cdee590698bfd0d9

Aliases

arxiv: 2301.11054 · arxiv_version: 2301.11054v1 · doi: 10.48550/arxiv.2301.11054 · pith_short_12: 7QCVUKNRAE6C · pith_short_16: 7QCVUKNRAE6C3RXF · pith_short_8: 7QCVUKNR

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/7QCVUKNRAE6C3RXFEA6L3EDPJW \
  | 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: fc055a29b1013c2dc6e5203cbd906f4d904056ab85130352cdee590698bfd0d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "872ab291e5faaf3ab37e5869562033b2ae34466c2863416472b103bf65a2568e",
    "cross_cats_sorted": [
      "math.AG",
      "math.OA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2023-01-26T11:58:09Z",
    "title_canon_sha256": "1f9f146a78f71cd12c0c7e03f837178a59040ec610653c898c8e420f1300576b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2301.11054",
    "kind": "arxiv",
    "version": 1
  }
}