Pith Number

pith:WKBL2ZO2

pith:2012:WKBL2ZO2UTBGQE4MJ63LYU4OIG

not attested not anchored not stored refs pending

Serre-Godeaux varieties and the etale index

Benjamin Antieau, Ben Williams

arxiv:1205.1279 v1 · 2012-05-07 · math.AG · math.AT · math.GR · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WKBL2ZO2UTBGQE4MJ63LYU4OIG}

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	2026-05-18T03:56:11.622963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b282bd65daa4c268138c4fb6bc538e418a5af031ef65495cbbdd92635f5871b3

Aliases

arxiv: 1205.1279 · arxiv_version: 1205.1279v1 · doi: 10.48550/arxiv.1205.1279 · pith_short_12: WKBL2ZO2UTBG · pith_short_16: WKBL2ZO2UTBGQE4M · pith_short_8: WKBL2ZO2

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/WKBL2ZO2UTBGQE4MJ63LYU4OIG \
  | 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: b282bd65daa4c268138c4fb6bc538e418a5af031ef65495cbbdd92635f5871b3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa5ec1b486c743beeec3c6550631f078fa0d8cf7aa39e2c4e9489f4dd07058e7",
    "cross_cats_sorted": [
      "math.AT",
      "math.GR",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-05-07T04:03:08Z",
    "title_canon_sha256": "928ce5824c5aaa38bff91aeca1d91c34867ca41f3fe9d444ec6a36afd5543991"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.1279",
    "kind": "arxiv",
    "version": 1
  }
}