Pith Number

pith:SOBY7GHK

pith:2009:SOBY7GHKXQ5AWRYGLZNPPV2NLD

not attested not anchored not stored refs pending

Numerical aspects of evolution of plane curves satisfying the fourth order geometric equation

Daniel Sevcovic, Karol Mikula

arxiv:0905.1433 v1 · 2009-05-09 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SOBY7GHKXQ5AWRYGLZNPPV2NLD}

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	2026-06-03T23:06:26.039298Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93838f98eabc3a0b47065e5af7d74d58d2a6f0b1b080ee6dd4dc1026cdac5cc3

Aliases

arxiv: 0905.1433 · arxiv_version: 0905.1433v1 · doi: 10.48550/arxiv.0905.1433 · pith_short_12: SOBY7GHKXQ5A · pith_short_16: SOBY7GHKXQ5AWRYG · pith_short_8: SOBY7GHK

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/SOBY7GHKXQ5AWRYGLZNPPV2NLD \
  | 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: 93838f98eabc3a0b47065e5af7d74d58d2a6f0b1b080ee6dd4dc1026cdac5cc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c905927508f2b55e38b8032c26138072b84ee9dbac4b535b87ec31490dc45cb",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-05-09T20:14:00Z",
    "title_canon_sha256": "381547e0963ffa99a10f824294d53b0269119caa917cd04c3fd1ff09da3d0db7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.1433",
    "kind": "arxiv",
    "version": 1
  }
}