Pith Number

pith:2O65AC2E

pith:2025:2O65AC2E4QH5FZ67PK2ZDZZW6N

not attested not anchored not stored refs pending

A quantum speedup algorithm for TSP based on quantum dynamic programming with very few qubits

Bai Xujun, Shang Yun

arxiv:2502.08853 v4 · 2025-02-12 · 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{2O65AC2E4QH5FZ67PK2ZDZZW6N}

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	2026-07-05T10:53:15.640981Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3bdd00b44e40fd2e7df7ab591e736f374a5e9c18afaf0685509db4b94b82cd0

Aliases

arxiv: 2502.08853 · arxiv_version: 2502.08853v4 · doi: 10.48550/arxiv.2502.08853 · pith_short_12: 2O65AC2E4QH5 · pith_short_16: 2O65AC2E4QH5FZ67 · pith_short_8: 2O65AC2E

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/2O65AC2E4QH5FZ67PK2ZDZZW6N \
  | 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: d3bdd00b44e40fd2e7df7ab591e736f374a5e9c18afaf0685509db4b94b82cd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ac7b54baa34d19b23a9d84c0931810c932b9f247f6675f57ddf7050d7db807a",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-02-12T23:58:25Z",
    "title_canon_sha256": "4a483024a6745c61df38cc9fccd5fab27f3f4c7869f6d5f83592dc4f1ceb1ec9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.08853",
    "kind": "arxiv",
    "version": 4
  }
}