Pith Number

pith:QM3PZZJS

pith:2026:QM3PZZJS7NRZ5IDY2TUYQ42JHE

not attested not anchored not stored refs pending

Semidefinite programming for understanding the limitations of Lindblad equations

Archak Purkayastha, Devashish Tupkary, Manas Kulkarni, Soumyadeep Sarma

arxiv:2602.01794 v2 · 2026-02-02 · quant-ph · cond-mat.mes-hall · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QM3PZZJS7NRZ5IDY2TUYQ42JHE}

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	2026-06-24T00:14:22.382035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8336fce532fb639ea078d4e988734939167c9855cb4b66683031f036fe9669c9

Aliases

arxiv: 2602.01794 · arxiv_version: 2602.01794v2 · doi: 10.48550/arxiv.2602.01794 · pith_short_12: QM3PZZJS7NRZ · pith_short_16: QM3PZZJS7NRZ5IDY · pith_short_8: QM3PZZJS

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/QM3PZZJS7NRZ5IDY2TUYQ42JHE \
  | 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: 8336fce532fb639ea078d4e988734939167c9855cb4b66683031f036fe9669c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "328d4553d3faad73fd817be45d597302364ea4840762a055f187b072f02ab9be",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-02-02T08:26:44Z",
    "title_canon_sha256": "7aeaba20394d08e0ff6e4a09fa764d36ea33df7bd73d1c4ae183060fcac8650a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.01794",
    "kind": "arxiv",
    "version": 2
  }
}