Pith Number

pith:ZX7227CH

pith:2018:ZX7227CHIS2U6X7FSACIA46UC2

not attested not anchored not stored refs pending

Cyclic covers and Ihara's Question

Akio Tamagawa, Christopher Rasmussen

arxiv:1803.08524 v1 · 2018-03-22 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZX7227CHIS2U6X7FSACIA46UC2}

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	2026-05-18T00:20:21.436595Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cdffad7c4744b54f5fe590048073d416a03506720dae4e57421a12732d939693

Aliases

arxiv: 1803.08524 · arxiv_version: 1803.08524v1 · doi: 10.48550/arxiv.1803.08524 · pith_short_12: ZX7227CHIS2U · pith_short_16: ZX7227CHIS2U6X7F · pith_short_8: ZX7227CH

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/ZX7227CHIS2U6X7FSACIA46UC2 \
  | 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: cdffad7c4744b54f5fe590048073d416a03506720dae4e57421a12732d939693

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fae382ec4b7ed0eeb590a454901401ec27dd33beb65e1f4c0b08b24e2cb4877",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-03-22T18:07:09Z",
    "title_canon_sha256": "68e57283ef9fa9c86978639619ab1033f2ce4f0c22183231fd779ab3fd29e69a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08524",
    "kind": "arxiv",
    "version": 1
  }
}