Pith Number

pith:Y5WHQB53

pith:2015:Y5WHQB53WKUHGANGOQ2UQVTIGA

not attested not anchored not stored refs pending

Epicycloids and Blaschke products

Alastair Fletcher, Chunlei Cao, Zhuan Ye

arxiv:1504.06539 v1 · 2015-04-24 · math.DS · math.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{Y5WHQB53WKUHGANGOQ2UQVTIGA}

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	2026-05-18T02:17:53.348261Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c76c7807bbb2a87301a6743548566830000e99bd69f8751f837feb08c0686b2f

Aliases

arxiv: 1504.06539 · arxiv_version: 1504.06539v1 · doi: 10.48550/arxiv.1504.06539 · pith_short_12: Y5WHQB53WKUH · pith_short_16: Y5WHQB53WKUHGANG · pith_short_8: Y5WHQB53

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/Y5WHQB53WKUHGANGOQ2UQVTIGA \
  | 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: c76c7807bbb2a87301a6743548566830000e99bd69f8751f837feb08c0686b2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "235e434852df55d68bbad61870fd29e66a28e8b5375a0db7cf44d7cdbf4d0041",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2015-04-24T15:23:18Z",
    "title_canon_sha256": "c816f55a2827a707e431a10f397ce7a3a5533c372a25654fa70d280fb6a02193"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.06539",
    "kind": "arxiv",
    "version": 1
  }
}