Pith Number

pith:CLH42HVG

pith:2012:CLH42HVG6IL3FJS26DAX5Y7ZWT

not attested not anchored not stored refs pending

Certified Rational Parametric Approximation of Real Algebraic Space Curves with Local Generic Position Method

Daniel Lazard, Jin-San Cheng, Kai Jin, Xiao-Shan Gao

arxiv:1204.0905 v1 · 2012-04-04 · 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{CLH42HVG6IL3FJS26DAX5Y7ZWT}

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	2026-05-18T03:58:37.456825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12cfcd1ea6f217b2a65af0c17ee3f9b4cec21f39deffcde33342dfe1063dd4d2

Aliases

arxiv: 1204.0905 · arxiv_version: 1204.0905v1 · doi: 10.48550/arxiv.1204.0905 · pith_short_12: CLH42HVG6IL3 · pith_short_16: CLH42HVG6IL3FJS2 · pith_short_8: CLH42HVG

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/CLH42HVG6IL3FJS26DAX5Y7ZWT \
  | 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: 12cfcd1ea6f217b2a65af0c17ee3f9b4cec21f39deffcde33342dfe1063dd4d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b8032be27e759c127a86a3d89f1ea7d12393184dfcfbb43216c3bcd0046a9ac0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2012-04-04T09:54:59Z",
    "title_canon_sha256": "dce00050c2a43240d85a246fa78d507198fc80a346e910e97fe7b837299933d6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1204.0905",
    "kind": "arxiv",
    "version": 1
  }
}