Pith Number

pith:33JH3ZKC

pith:2016:33JH3ZKC3D7EEFSXJAFY46EKCX

not attested not anchored not stored refs pending

Stable rationality of cyclic covers of projective spaces

Takuzo Okada

arxiv:1604.08417 v4 · 2016-04-28 · 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{33JH3ZKC3D7EEFSXJAFY46EKCX}

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	2026-05-17T23:41:13.697461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ded27de542d8fe421657480b8e788a15d1a789d6cfcedbeb81aefa81b19f7aa0

Aliases

arxiv: 1604.08417 · arxiv_version: 1604.08417v4 · doi: 10.48550/arxiv.1604.08417 · pith_short_12: 33JH3ZKC3D7E · pith_short_16: 33JH3ZKC3D7EEFSX · pith_short_8: 33JH3ZKC

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/33JH3ZKC3D7EEFSXJAFY46EKCX \
  | 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: ded27de542d8fe421657480b8e788a15d1a789d6cfcedbeb81aefa81b19f7aa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc24d16da890983fb65d6e8e3de3b7eb18db9073282d090344d855c76f84494a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-04-28T13:57:40Z",
    "title_canon_sha256": "c77fd15f12ee49c2ce7f9e49e5772a4746bf425731a4bf62f0da18467e5bf7b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08417",
    "kind": "arxiv",
    "version": 4
  }
}