Pith Number

pith:5F7LQTTB

pith:2004:5F7LQTTBQBBX2VK6FXXIS7J66I

not attested not anchored not stored refs pending

KDTREE 2: Fortran 95 and C++ software to efficiently search for near neighbors in a multi-dimensional Euclidean space

Matthew B. Kennel

arxiv:physics/0408067 v2 · 2004-08-14 · physics.data-an · physics.comp-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{5F7LQTTBQBBX2VK6FXXIS7J66I}

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.

Cited by

1 paper in Pith

Fast Graph-based Higher-Order Clustering Statistics on the GPU

Receipt and verification

First computed	2026-07-04T14:44:22.319845Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e97eb84e6180437d555e2dee897d3ef2089cc7130a6e7c481ac05f8884a21436

Aliases

arxiv: physics/0408067 · arxiv_version: physics/0408067v2 · doi: 10.48550/arxiv.physics/0408067 · pith_short_12: 5F7LQTTBQBBX · pith_short_16: 5F7LQTTBQBBX2VK6 · pith_short_8: 5F7LQTTB

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/5F7LQTTBQBBX2VK6FXXIS7J66I \
  | 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: e97eb84e6180437d555e2dee897d3ef2089cc7130a6e7c481ac05f8884a21436

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d14e2424f9ef0c197663e96cd8ebd018e6109a074b3b297fc918a7fe1438234",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "",
    "primary_cat": "physics.data-an",
    "submitted_at": "2004-08-14T01:35:34Z",
    "title_canon_sha256": "a92562cfd7d3ccc6cb78bd29e142abb89acc8143e114dc35c18d3193f1c4dc42"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0408067",
    "kind": "arxiv",
    "version": 2
  }
}