Pith Number

pith:D4KK5IBL

pith:2019:D4KK5IBL5ZVYJIUTLXKM5HKUN4

not attested not anchored not stored refs pending

Variational B-rep Model Analysis for Direct Modeling using Geometric Perturbation

Hsi-Yung Feng, Qiang Zou

arxiv:1903.07770 v1 · 2019-03-18 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4KK5IBL5ZVYJIUTLXKM5HKUN4}

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	2026-05-17T23:50:54.016923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f14aea02bee6b84a2935dd4ce9d546f3a33d97182953c8a966eeb185ee204d7

Aliases

arxiv: 1903.07770 · arxiv_version: 1903.07770v1 · doi: 10.48550/arxiv.1903.07770 · pith_short_12: D4KK5IBL5ZVY · pith_short_16: D4KK5IBL5ZVYJIUT · pith_short_8: D4KK5IBL

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/D4KK5IBL5ZVYJIUTLXKM5HKUN4 \
  | 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: 1f14aea02bee6b84a2935dd4ce9d546f3a33d97182953c8a966eeb185ee204d7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6afc4105b749515b00f608de726ac4e4ea1caf91daa344afb9f2843b0e815885",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2019-03-18T23:50:58Z",
    "title_canon_sha256": "bf9fcb889be2bb225303a47c4fc6af62898301706bafb4b703e213bc439b5f84"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.07770",
    "kind": "arxiv",
    "version": 1
  }
}