Pith Number

pith:QIQAI5ND

pith:2018:QIQAI5NDI4CAKG2HDSJ4CJ6TUL

not attested not anchored not stored refs pending

The Brauer-Manin obstruction for zero-cycles on K3 surfaces

Evis Ieronymou

arxiv:1804.03908 v3 · 2018-04-11 · 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{QIQAI5NDI4CAKG2HDSJ4CJ6TUL}

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	2026-05-18T00:16:41.956253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82200475a34704051b471c93c127d3a2c4ae30a7ea06d5602e0be8ea1c3e77b9

Aliases

arxiv: 1804.03908 · arxiv_version: 1804.03908v3 · doi: 10.48550/arxiv.1804.03908 · pith_short_12: QIQAI5NDI4CA · pith_short_16: QIQAI5NDI4CAKG2H · pith_short_8: QIQAI5ND

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/QIQAI5NDI4CAKG2HDSJ4CJ6TUL \
  | 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: 82200475a34704051b471c93c127d3a2c4ae30a7ea06d5602e0be8ea1c3e77b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b94bd2802c192926c655d7880d020ab89652641fd85caa71151ca1d650103ca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-04-11T10:02:41Z",
    "title_canon_sha256": "1ddece018771b5f32f2180b90ecdd8443c4b66dcd1da4136fb7bffc9a1106141"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03908",
    "kind": "arxiv",
    "version": 3
  }
}