Pith Number

pith:XETMWED6

pith:2020:XETMWED6UKIFWYKNYD4FWUIBVZ

not attested not anchored not stored refs pending

Machine learning topological invariants of non-Hermitian systems

Dan-Wei Zhang, Guo-Qing Zhang, Ling-Feng Zhang, Ling-Zhi Tang, Wei Huang, Zhi-Hao Huang

arxiv:2009.04058 v4 · 2020-09-09 · physics.comp-ph · cond-mat.dis-nn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XETMWED6UKIFWYKNYD4FWUIBVZ}

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	2026-07-05T02:09:46.472928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b926cb107ea2905b614dc0f85b5101ae5223483d5f7554c4f6dade36d545233c

Aliases

arxiv: 2009.04058 · arxiv_version: 2009.04058v4 · doi: 10.48550/arxiv.2009.04058 · pith_short_12: XETMWED6UKIF · pith_short_16: XETMWED6UKIFWYKN · pith_short_8: XETMWED6

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/XETMWED6UKIFWYKNYD4FWUIBVZ \
  | 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: b926cb107ea2905b614dc0f85b5101ae5223483d5f7554c4f6dade36d545233c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "949c35d9b094d41c12a9cc7841aee9f2d3fdcd4b47118ee06db0f8d2585ad241",
    "cross_cats_sorted": [
      "cond-mat.dis-nn"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2020-09-09T01:26:35Z",
    "title_canon_sha256": "df4e3391d98d24eeada3b8bdab04a99e648a3c50790ecd528165d358bead196e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.04058",
    "kind": "arxiv",
    "version": 4
  }
}