Pith Number

pith:H7WIPEH4

pith:2012:H7WIPEH46R4LYXXEHPDJDC4625

not attested not anchored not stored refs pending

Decomposition and partial trace of positive matrices with Hermitian blocks

Eun-Young Lee, Jean-Christophe Bourin

arxiv:1210.2922 v2 · 2012-10-10 · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{H7WIPEH46R4LYXXEHPDJDC4625}

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	2026-05-18T03:43:29.259961Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fec8790fcf478bc5ee43bc6918b9ed7633123034c0909f4c14b3f9f309d78cd

Aliases

arxiv: 1210.2922 · arxiv_version: 1210.2922v2 · doi: 10.48550/arxiv.1210.2922 · pith_short_12: H7WIPEH46R4L · pith_short_16: H7WIPEH46R4LYXXE · pith_short_8: H7WIPEH4

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/H7WIPEH46R4LYXXEHPDJDC4625 \
  | 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: 3fec8790fcf478bc5ee43bc6918b9ed7633123034c0909f4c14b3f9f309d78cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf6a714519aaf5c9688282ab419aafaaf86c11ba3a72923b15cb064a051cd1c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2012-10-10T13:53:31Z",
    "title_canon_sha256": "5d189a7ec648a2e3bafc30acb189082643a842dc72ffacba79ad98baa173c54d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.2922",
    "kind": "arxiv",
    "version": 2
  }
}