Pith Number

pith:SP6ETXJO

pith:2025:SP6ETXJOKCSAEQJIU5SJFQF2YW

not attested not anchored not stored refs pending

Systematic improvement of the quantum approximate optimisation ansatz for combinatorial optimisation using quantum subspace expansion

Yann Beaujeault-Taudi\`ere

arxiv:2506.18594 v1 · 2025-06-23 · quant-ph · nucl-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SP6ETXJOKCSAEQJIU5SJFQF2YW}

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	2026-07-05T11:25:52.586030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93fc49dd2e50a4024128a76492c0bac5b994f56c500dac11ea47932317a4ecd4

Aliases

arxiv: 2506.18594 · arxiv_version: 2506.18594v1 · doi: 10.48550/arxiv.2506.18594 · pith_short_12: SP6ETXJOKCSA · pith_short_16: SP6ETXJOKCSAEQJI · pith_short_8: SP6ETXJO

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/SP6ETXJOKCSAEQJIU5SJFQF2YW \
  | 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: 93fc49dd2e50a4024128a76492c0bac5b994f56c500dac11ea47932317a4ecd4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c70a3fd500045887f13674d8877e05fc976d633a81f51da08193cb6f00d7b20",
    "cross_cats_sorted": [
      "nucl-th"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-06-23T12:54:06Z",
    "title_canon_sha256": "0da588ada75891df2c6e9af130b085da366b137cc80d58b708b1fef94b38a8f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.18594",
    "kind": "arxiv",
    "version": 1
  }
}