Pith Number

pith:W7H55YKM

pith:2022:W7H55YKMHJXFSQ2DMSGLR56GQ7

not attested not anchored not stored refs pending

A new compressed cover tree for k-nearest neighbour search and the stable-under-noise mergegram of a point cloud

Yury Elkin

arxiv:2205.10194 v5 · 2022-05-20 · cs.CG · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7H55YKMHJXFSQ2DMSGLR56GQ7}

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	2026-07-05T05:30:08.156312Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7cfdee14c3a6e594343648cb8f7c687e525b9d1ecc7526cd24436358ad2a961

Aliases

arxiv: 2205.10194 · arxiv_version: 2205.10194v5 · doi: 10.48550/arxiv.2205.10194 · pith_short_12: W7H55YKMHJXF · pith_short_16: W7H55YKMHJXFSQ2D · pith_short_8: W7H55YKM

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/W7H55YKMHJXFSQ2DMSGLR56GQ7 \
  | 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: b7cfdee14c3a6e594343648cb8f7c687e525b9d1ecc7526cd24436358ad2a961

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c6fad6d70a9ba50c566c242888aa292fc7d36aa30b30c7d202ef799894d2e6f",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2022-05-20T14:13:43Z",
    "title_canon_sha256": "a62bad0fb994404106d43860da5d08ba308ed70fa285c0d5d58c4a268a12a450"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2205.10194",
    "kind": "arxiv",
    "version": 5
  }
}