Pith Number

pith:LDTKDLJY

pith:2009:LDTKDLJYU3XWQGLXEG3WSQVYBZ

not attested not anchored not stored refs pending

Rational Conchoids of Algebraic Curves

J.R. Sendra, J. Sendra

arxiv:0901.4652 v1 · 2009-01-29 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LDTKDLJYU3XWQGLXEG3WSQVYBZ}

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	2026-05-18T03:02:57.679775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

58e6a1ad38a6ef68197721b76942b80e4e4d55a255b7e6aee08932b1a0e8fe1a

Aliases

arxiv: 0901.4652 · arxiv_version: 0901.4652v1 · doi: 10.48550/arxiv.0901.4652 · pith_short_12: LDTKDLJYU3XW · pith_short_16: LDTKDLJYU3XWQGLX · pith_short_8: LDTKDLJY

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/LDTKDLJYU3XWQGLXEG3WSQVYBZ \
  | 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: 58e6a1ad38a6ef68197721b76942b80e4e4d55a255b7e6aee08932b1a0e8fe1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "776408f1924a5024b814bfcef25a8fa2a9c64092228b896e6a9f847d629ac2ce",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-01-29T11:21:13Z",
    "title_canon_sha256": "675f59ea6e942b992306ea4938852a63601a219ca6cb1fc7b5ad50bf17f98147"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.4652",
    "kind": "arxiv",
    "version": 1
  }
}