Pith Number

pith:IAUJHSH4

pith:2014:IAUJHSH4BYTXLWWNPP76QUNE6Z

not attested not anchored not stored refs pending

Del Pezzo surfaces of degree four violating the Hasse principle are Zariski dense in the moduli scheme

Damaris Schindler, J\"org Jahnel

arxiv:1411.2397 v1 · 2014-11-10 · 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{IAUJHSH4BYTXLWWNPP76QUNE6Z}

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	2026-05-18T02:38:07.564025Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

402893c8fc0e2775dacd7bffe851a4f652ec1cddc47295f78d7c37230e25fbec

Aliases

arxiv: 1411.2397 · arxiv_version: 1411.2397v1 · doi: 10.48550/arxiv.1411.2397 · pith_short_12: IAUJHSH4BYTX · pith_short_16: IAUJHSH4BYTXLWWN · pith_short_8: IAUJHSH4

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/IAUJHSH4BYTXLWWNPP76QUNE6Z \
  | 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: 402893c8fc0e2775dacd7bffe851a4f652ec1cddc47295f78d7c37230e25fbec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b42f1271538f3e9ed25fad98daa3f243d495bd6bb4ceace223a192a3da233ee8",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-11-10T12:13:47Z",
    "title_canon_sha256": "f0f156fe3a79254676f9506cda6d7b99bb1415e4fc6ae64b9f8483ca1a82b473"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.2397",
    "kind": "arxiv",
    "version": 1
  }
}