Pith Number

pith:W4G7EI3G

pith:2010:W4G7EI3GBDCCSA4KRMLOCXLFYS

not attested not anchored not stored refs pending

Quantum heuristic algorithm for traveling salesman problem

Changhyoup Lee, James Lim, Jeongho Bang, Jinhyoung Lee, Junghee Ryu, Seokwon Yoo

arxiv:1004.4124 v3 · 2010-04-23 · 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{W4G7EI3GBDCCSA4KRMLOCXLFYS}

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	2026-05-18T03:37:09.435486Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b70df2236608c429038a8b16e15d65c4aa4103921a7510bfa56514c1f88054ef

Aliases

arxiv: 1004.4124 · arxiv_version: 1004.4124v3 · doi: 10.48550/arxiv.1004.4124 · pith_short_12: W4G7EI3GBDCC · pith_short_16: W4G7EI3GBDCCSA4K · pith_short_8: W4G7EI3G

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/W4G7EI3GBDCCSA4KRMLOCXLFYS \
  | 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: b70df2236608c429038a8b16e15d65c4aa4103921a7510bfa56514c1f88054ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3295345d9014cfadfe1ddd36d1cc99b32263bb3a380edc141bf6498000ffad87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2010-04-23T13:07:35Z",
    "title_canon_sha256": "2fc0fe6d4be82300d0f4315e6761de232d0a073e3a7294a70f5e33064ba90b5d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4124",
    "kind": "arxiv",
    "version": 3
  }
}