Pith Number

pith:YBTSQFHE

pith:2019:YBTSQFHE6MG3LXJS7LRPZS2BPL

not attested not anchored not stored refs pending

K-Nearest Neighbor Approximation Via the Friend-of-a-Friend Principle

Jacob D. Baron, R. W. R. Darling

arxiv:1908.07645 v4 · 2019-08-20 · math.CO · math.ST · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YBTSQFHE6MG3LXJS7LRPZS2BPL}

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

FAMST: Fast Approximate Minimum Spanning Tree Construction for Large-Scale and High-Dimensional Data

Receipt and verification

First computed	2026-07-05T02:02:00.830763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0672814e4f30db5dd32fae2fccb417af2fb80ddf9fc273744113d5408783b29

Aliases

arxiv: 1908.07645 · arxiv_version: 1908.07645v4 · doi: 10.48550/arxiv.1908.07645 · pith_short_12: YBTSQFHE6MG3 · pith_short_16: YBTSQFHE6MG3LXJS · pith_short_8: YBTSQFHE

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/YBTSQFHE6MG3LXJS7LRPZS2BPL \
  | 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: c0672814e4f30db5dd32fae2fccb417af2fb80ddf9fc273744113d5408783b29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0655257eab76a22c45cf2dfd16a7a636e2c2fc00d3b8d9446f86c08b97acfc1d",
    "cross_cats_sorted": [
      "math.ST",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-08-20T23:43:24Z",
    "title_canon_sha256": "42b95aa66999fbd6419e88f4c8d240f2871efdadfab92c14a1a482569066ebab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.07645",
    "kind": "arxiv",
    "version": 4
  }
}