Pith Number

pith:4HBHKKQA

pith:2019:4HBHKKQASHA3JPHVXYNE7VLTJJ

not attested not anchored not stored refs pending

Fast Algorithms for Surface Reconstruction from Point Cloud

Hao Liu, Martin Huska, Sung Ha Kang, Yuchen He

arxiv:1907.01142 v1 · 2019-07-02 · math.NA · cs.NA · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HBHKKQASHA3JPHVXYNE7VLTJJ}

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	2026-05-17T23:41:41.165163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1c2752a0091c1b4bcf5be1a4fd5734a7c420685e478b67db004b267d0603d6f

Aliases

arxiv: 1907.01142 · arxiv_version: 1907.01142v1 · doi: 10.48550/arxiv.1907.01142 · pith_short_12: 4HBHKKQASHA3 · pith_short_16: 4HBHKKQASHA3JPHV · pith_short_8: 4HBHKKQA

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/4HBHKKQASHA3JPHVXYNE7VLTJJ \
  | 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: e1c2752a0091c1b4bcf5be1a4fd5734a7c420685e478b67db004b267d0603d6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc65c10832601e0ec39e3190a6a18ba3b7ec36927144874258a2c0397ef15935",
    "cross_cats_sorted": [
      "cs.NA",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-07-02T03:16:18Z",
    "title_canon_sha256": "8a9e66bf53afcdab77134e454dc7cce680c75edc33129d14b014f9bf65b6fe82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.01142",
    "kind": "arxiv",
    "version": 1
  }
}