Pith Number

pith:ZDTII2MJ

pith:2026:ZDTII2MJO5C5MQTEQEDFFTHTVV

not attested not anchored not stored refs pending

The Cross-Kernel Margin: A Robustness Measure for Quantum Kernel Methods

Ilya Sinayskiy, Saarisha Govender

arxiv:2601.23084 v3 · 2026-01-30 · 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{ZDTII2MJO5C5MQTEQEDFFTHTVV}

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	2026-07-10T01:19:41.931811Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c8e68469897745d64264810652ccf3ad529c6595dfe16f68901aa7fe17db3566

Aliases

arxiv: 2601.23084 · arxiv_version: 2601.23084v3 · doi: 10.48550/arxiv.2601.23084 · pith_short_12: ZDTII2MJO5C5 · pith_short_16: ZDTII2MJO5C5MQTE · pith_short_8: ZDTII2MJ

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/ZDTII2MJO5C5MQTEQEDFFTHTVV \
  | 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: c8e68469897745d64264810652ccf3ad529c6595dfe16f68901aa7fe17db3566

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8dd1e7920026b13ee8514010dd1d1941eeaa9003ae54b7945a556b20c48eeced",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-01-30T15:31:36Z",
    "title_canon_sha256": "cabea441f06d799f521c3ff60a8def4e072e3cf0df997c32bee3bccda9beb0f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.23084",
    "kind": "arxiv",
    "version": 3
  }
}