Pith Number

pith:GV4X53SN

pith:2012:GV4X53SNPSF5V23PEDEJ5UGIAG

not attested not anchored not stored refs pending

Difference of Normals as a Multi-Scale Operator in Unorganized Point Clouds

Babak Taati, Michael Greenspan, Robin Harrap, Yani Ioannou

arxiv:1209.1759 v1 · 2012-09-08 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GV4X53SNPSF5V23PEDEJ5UGIAG}

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	2026-05-18T00:56:12.772268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35797eee4d7c8bdaeb6f20c89ed0c80182dba7e7cfd3afc8d8e6c000618b657c

Aliases

arxiv: 1209.1759 · arxiv_version: 1209.1759v1 · doi: 10.48550/arxiv.1209.1759 · pith_short_12: GV4X53SNPSF5 · pith_short_16: GV4X53SNPSF5V23P · pith_short_8: GV4X53SN

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/GV4X53SNPSF5V23PEDEJ5UGIAG \
  | 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: 35797eee4d7c8bdaeb6f20c89ed0c80182dba7e7cfd3afc8d8e6c000618b657c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87cc1859664fe22e1fccecf40ab3bedb3447c445892a3ae40179ec3714016032",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2012-09-08T22:43:28Z",
    "title_canon_sha256": "f3c0a8981bf0aacda73cb02326a753c47bace23f671d7b2626f39e03069cf730"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1759",
    "kind": "arxiv",
    "version": 1
  }
}