Pith Number

pith:6NNQYQIS

pith:2018:6NNQYQIS623EFALXKWWL7ENYE4

not attested not anchored not stored refs pending

A PTAS for Euclidean TSP with Hyperplane Neighborhoods

Antonios Antoniadis, Kevin Schewior, Krzysztof Fleszar, Ruben Hoeksma

arxiv:1804.03953 v2 · 2018-04-11 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6NNQYQIS623EFALXKWWL7ENYE4}

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	2026-05-17T23:43:28.477023Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f35b0c4112f6b642817755acbf91b8273a3f70105b3eb4073379dee0920cbd74

Aliases

arxiv: 1804.03953 · arxiv_version: 1804.03953v2 · doi: 10.48550/arxiv.1804.03953 · pith_short_12: 6NNQYQIS623E · pith_short_16: 6NNQYQIS623EFALX · pith_short_8: 6NNQYQIS

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/6NNQYQIS623EFALXKWWL7ENYE4 \
  | 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: f35b0c4112f6b642817755acbf91b8273a3f70105b3eb4073379dee0920cbd74

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00d3e83f9e13f5848695e7d72f2be4d658ac3c288d4c461f64c9c105191f3a56",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-04-11T12:13:57Z",
    "title_canon_sha256": "a2a0c886e9925dced18997db5ebf022da065180ad3d25200cab908896f0f9c4a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03953",
    "kind": "arxiv",
    "version": 2
  }
}