Pith Number

pith:A52WYZOT

pith:2021:A52WYZOTJKPXAGNHX3VUE445LL

not attested not anchored not stored refs pending

Abstract Operator Systems over the Cone of Positive Semidefinite Matrices

Martin Berger, Tim Netzer

arxiv:2109.14453 v1 · 2021-09-29 · math.OA · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A52WYZOTJKPXAGNHX3VUE445LL}

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	2026-07-05T03:18:35.382732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07756c65d34a9f7019a7beeb42739d5acbbb13d7b8ced92d3d7432525e829d32

Aliases

arxiv: 2109.14453 · arxiv_version: 2109.14453v1 · doi: 10.48550/arxiv.2109.14453 · pith_short_12: A52WYZOTJKPX · pith_short_16: A52WYZOTJKPXAGNH · pith_short_8: A52WYZOT

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/A52WYZOTJKPXAGNHX3VUE445LL \
  | 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: 07756c65d34a9f7019a7beeb42739d5acbbb13d7b8ced92d3d7432525e829d32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c10f67936090fa2723a969f4ebe1215058089650287cb187ee2dc64af3624e61",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2021-09-29T14:36:53Z",
    "title_canon_sha256": "a63615329a0886ce4a7fc91eb7f8f0acd97ff788e3b9b7b567330cb02caac1c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.14453",
    "kind": "arxiv",
    "version": 1
  }
}