Pith Number

pith:YAKZ6TIG

pith:2009:YAKZ6TIGPNPDI3LDWTRIMIR235

not attested not anchored not stored refs pending

Conchoidal transform of two plane curves

Alberto Albano, Margherita Roggero

arxiv:0905.3255 v2 · 2009-05-20 · 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{YAKZ6TIGPNPDI3LDWTRIMIR235}

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	2026-05-18T02:49:10.236813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0159f4d067b5e346d63b4e286223adf79e15ce547512a1f1d8512f1f339e293

Aliases

arxiv: 0905.3255 · arxiv_version: 0905.3255v2 · doi: 10.48550/arxiv.0905.3255 · pith_short_12: YAKZ6TIGPNPD · pith_short_16: YAKZ6TIGPNPDI3LD · pith_short_8: YAKZ6TIG

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/YAKZ6TIGPNPDI3LDWTRIMIR235 \
  | 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: c0159f4d067b5e346d63b4e286223adf79e15ce547512a1f1d8512f1f339e293

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "51bc21049de0dc6c8265aa9e2a5241d870e1581812a63efdee0eff07fc410712",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2009-05-20T09:20:43Z",
    "title_canon_sha256": "66cc9e623e260740f4ae41d93b7d4b7bae3f89541f6991293fd97b4c7d9b9e67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3255",
    "kind": "arxiv",
    "version": 2
  }
}