Pith Number

pith:BY5DN5T5

pith:2012:BY5DN5T5E3S6WUKQ3GANYINYGE

not attested not anchored not stored refs pending

Eight-Fifth Approximation for TSP Paths

Andr\'as Seb\"o

arxiv:1209.3523 v3 · 2012-09-16 · cs.DM · cs.DS · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BY5DN5T5E3S6WUKQ3GANYINYGE}

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	2026-05-18T00:47:59.638228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e3a36f67d26e5eb5150d980dc21b8313b17d688672e2f4438d918b60bf5e5b7

Aliases

arxiv: 1209.3523 · arxiv_version: 1209.3523v3 · doi: 10.48550/arxiv.1209.3523 · pith_short_12: BY5DN5T5E3S6 · pith_short_16: BY5DN5T5E3S6WUKQ · pith_short_8: BY5DN5T5

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/BY5DN5T5E3S6WUKQ3GANYINYGE \
  | 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: 0e3a36f67d26e5eb5150d980dc21b8313b17d688672e2f4438d918b60bf5e5b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "801712a3446a64235ab74173266b7034ba5ab34228d933d83d722cd1133fb84f",
    "cross_cats_sorted": [
      "cs.DS",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-09-16T21:47:51Z",
    "title_canon_sha256": "5c481c8674a3818bf3ca7c160719f7a95f1159085cdc28f08666fcc113bcf94d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.3523",
    "kind": "arxiv",
    "version": 3
  }
}