Pith Number

pith:MPDSJGXW

pith:2019:MPDSJGXWZ3IOKS726QCOKNTEZ4

not attested not anchored not stored refs pending

Topological Classification of Non-Hermitian Hamiltonians

Charles C. Wojcik, Shanhui Fan, Tom\'a\v{s} Bzdu\v{s}ek, Xiao-Qi Sun

arxiv:1911.12748 v1 · 2019-11-28 · math-ph · cond-mat.mes-hall · math.MP · physics.optics · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MPDSJGXWZ3IOKS726QCOKNTEZ4}

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	2026-07-05T01:04:08.103788Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

63c7249af6ced0e54bfaf404e53664cf293f107828d3249ad646078c147d2e48

Aliases

arxiv: 1911.12748 · arxiv_version: 1911.12748v1 · doi: 10.48550/arxiv.1911.12748 · pith_short_12: MPDSJGXWZ3IO · pith_short_16: MPDSJGXWZ3IOKS72 · pith_short_8: MPDSJGXW

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/MPDSJGXWZ3IOKS726QCOKNTEZ4 \
  | 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: 63c7249af6ced0e54bfaf404e53664cf293f107828d3249ad646078c147d2e48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d025e5ebdee0654d3073b620ed706cb269f4d1a5e4f483c47ffc15732d1525c4",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "math.MP",
      "physics.optics",
      "quant-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2019-11-28T15:18:32Z",
    "title_canon_sha256": "e6f24dacd255a8b7d3fdbd892b14967bed5fb66cc8d66deb032c24cb4ba0bd91"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.12748",
    "kind": "arxiv",
    "version": 1
  }
}