Pith Number

pith:4JRJ3FSK

pith:2022:4JRJ3FSKQKDOM6A4XODAPTFNRP

not attested not anchored not stored refs pending

Quantum Fisher kernel for mitigating the vanishing similarity issue

Hideaki Kawaguchi, Naoki Yamamoto, Yudai Suzuki

arxiv:2210.16581 v1 · 2022-10-29 · 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{4JRJ3FSKQKDOM6A4XODAPTFNRP}

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	2026-07-05T05:11:48.058073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2629d964a8286e6781cbb8607ccad8bc7ee0c03f793c28a113e47fc61cef6f2

Aliases

arxiv: 2210.16581 · arxiv_version: 2210.16581v1 · doi: 10.48550/arxiv.2210.16581 · pith_short_12: 4JRJ3FSKQKDO · pith_short_16: 4JRJ3FSKQKDOM6A4 · pith_short_8: 4JRJ3FSK

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/4JRJ3FSKQKDOM6A4XODAPTFNRP \
  | 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: e2629d964a8286e6781cbb8607ccad8bc7ee0c03f793c28a113e47fc61cef6f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3849ea2a2b46922f7747b3fa4da4065740121ab3f151adc5dbfc0cb715a42dd3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2022-10-29T12:00:17Z",
    "title_canon_sha256": "e680808748211662b506e66f8cc3c2013c4471da5d5837b28162093fca9967e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2210.16581",
    "kind": "arxiv",
    "version": 1
  }
}