Pith Number

pith:42WI5NEX

pith:2026:42WI5NEX3UW6BEFLYPKGMRQP7J

not attested not anchored not stored refs pending

Optimization landscapes of variational quantum algorithms

Guofeng Zhang, Re-Bing Wu, Shuming Cheng, Xiaozhen Ge

arxiv:2603.05190 v2 · 2026-03-05 · 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{42WI5NEX3UW6BEFLYPKGMRQP7J}

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	2026-07-07T01:16:07.436736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6ac8eb497dd2de090abc3d466460ffa6ca83796927f05d9f7d86f8cf46070d3

Aliases

arxiv: 2603.05190 · arxiv_version: 2603.05190v2 · doi: 10.48550/arxiv.2603.05190 · pith_short_12: 42WI5NEX3UW6 · pith_short_16: 42WI5NEX3UW6BEFL · pith_short_8: 42WI5NEX

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/42WI5NEX3UW6BEFLYPKGMRQP7J \
  | 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: e6ac8eb497dd2de090abc3d466460ffa6ca83796927f05d9f7d86f8cf46070d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f4620318b674ff97ad155af645397071cbaab73eeef88aa6329a8aef995689f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-03-05T14:03:09Z",
    "title_canon_sha256": "5084df4f2afa46fe7e6271521d0f009eadf7f400f1c15e00751ac57dc15d1761"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.05190",
    "kind": "arxiv",
    "version": 2
  }
}