Pith Number

pith:2NXWUCDC

pith:2020:2NXWUCDCWEISB3MNF4EREHQA4D

not attested not anchored not stored refs pending

Schr\"{o}dinger PCA: On the Duality between Principal Component Analysis and Schr\"{o}dinger Equation

Sitian Qian, Tianyi Yang, Yixuan Wang, Yuxuan Yan, Ziming Liu

arxiv:2006.04379 v2 · 2020-06-08 · physics.comp-ph · cond-mat.dis-nn · cs.LG · math.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2NXWUCDCWEISB3MNF4EREHQA4D}

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	2026-07-05T03:07:43.403654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d36f6a0862b11120ed8d2f09121e00e0c6959c35a90094cb5928857c41a618c2

Aliases

arxiv: 2006.04379 · arxiv_version: 2006.04379v2 · doi: 10.48550/arxiv.2006.04379 · pith_short_12: 2NXWUCDCWEIS · pith_short_16: 2NXWUCDCWEISB3MN · pith_short_8: 2NXWUCDC

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/2NXWUCDCWEISB3MNF4EREHQA4D \
  | 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: d36f6a0862b11120ed8d2f09121e00e0c6959c35a90094cb5928857c41a618c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b331b0cb395762aba3ed94d78ef612e981acef8f64a15f439c45711f6be36f3",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "cs.LG",
      "math.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.comp-ph",
    "submitted_at": "2020-06-08T06:55:29Z",
    "title_canon_sha256": "62a561e586fb9bfdb03487fe36c58f2794e0f7d60c50300d4ed8c509aeac70b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.04379",
    "kind": "arxiv",
    "version": 2
  }
}