Pith Number

pith:2QMYYHEH

pith:2003:2QMYYHEHB3WFOXDPJPSSIA3LRE

not attested not anchored not stored refs pending

On the complexity of curve fitting algorithms

C. Lesort, N. Chernov, N. Simanyi

arxiv:cs/0308023 v1 · 2003-08-15 · cs.CC · 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{2QMYYHEHB3WFOXDPJPSSIA3LRE}

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	2026-05-18T04:42:22.530740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4198c1c870eec575c6f4be524036b8914fc58c6b8e9e2bfdee1af637df10d6f

Aliases

arxiv: cs/0308023 · arxiv_version: cs/0308023v1 · doi: 10.48550/arxiv.cs/0308023 · pith_short_12: 2QMYYHEHB3WF · pith_short_16: 2QMYYHEHB3WFOXDP · pith_short_8: 2QMYYHEH

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/2QMYYHEHB3WFOXDPJPSSIA3LRE \
  | 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: d4198c1c870eec575c6f4be524036b8914fc58c6b8e9e2bfdee1af637df10d6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "76a31b30a494802767ff63bf02c4f1d49b84860087a95b05794c6a25cf3a0d90",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "",
    "primary_cat": "cs.CC",
    "submitted_at": "2003-08-15T15:37:43Z",
    "title_canon_sha256": "81d1c5a9b1781a294e17b21b56bb500d2d131d8f7d205ea0d6b86a0e480f2826"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0308023",
    "kind": "arxiv",
    "version": 1
  }
}