Pith Number

pith:ZSI6UC2P

pith:2012:ZSI6UC2PBZHK5VEFEOX5MM2YHP

not attested not anchored not stored refs pending

New tools for investigating positive maps in matrix algebras

Dariusz Chru\'sci\'nski, Justyna Pytel Zwolak

arxiv:1204.6579 v1 · 2012-04-30 · quant-ph · 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{ZSI6UC2PBZHK5VEFEOX5MM2YHP}

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	2026-05-18T02:28:48.480600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cc91ea0b4f0e4eaed48523afd633583be6fb067eacae55f160498c858fb5df11

Aliases

arxiv: 1204.6579 · arxiv_version: 1204.6579v1 · doi: 10.48550/arxiv.1204.6579 · pith_short_12: ZSI6UC2PBZHK · pith_short_16: ZSI6UC2PBZHK5VEF · pith_short_8: ZSI6UC2P

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/ZSI6UC2PBZHK5VEFEOX5MM2YHP \
  | 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: cc91ea0b4f0e4eaed48523afd633583be6fb067eacae55f160498c858fb5df11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fa2c134be98f7afde30fed15449a4362e750629ba39260437fd6e6299ea9110",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-04-30T09:38:29Z",
    "title_canon_sha256": "fc86f37ac898b0557ebc2297816ef32612e3bb16ff8f0d89be77dc0837cc90a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.6579",
    "kind": "arxiv",
    "version": 1
  }
}