Pith Number

pith:UPM35BTA

pith:2017:UPM35BTAJC6I4BIOZ2T23PIJML

not attested not anchored not stored refs pending

The G\"opel variety

Eberhard Freitag, Riccardo Salvati Manni

arxiv:1706.05816 v1 · 2017-06-19 · math.AG · math.CO · 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{UPM35BTAJC6I4BIOZ2T23PIJML}

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	2026-05-18T00:33:06.509718Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3d9be866048bc8e050ecea7adbd0962d851eda71190e2c6bab064b29e9bb6cf

Aliases

arxiv: 1706.05816 · arxiv_version: 1706.05816v1 · doi: 10.48550/arxiv.1706.05816 · pith_short_12: UPM35BTAJC6I · pith_short_16: UPM35BTAJC6I4BIO · pith_short_8: UPM35BTA

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/UPM35BTAJC6I4BIOZ2T23PIJML \
  | 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: a3d9be866048bc8e050ecea7adbd0962d851eda71190e2c6bab064b29e9bb6cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfe2459955c10c8b19c3cef9e1cf616a75fd8332afe8494de597daae48985f3b",
    "cross_cats_sorted": [
      "math.CO",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-06-19T08:03:34Z",
    "title_canon_sha256": "5171177e31e576c0c6b5f7a66f38340f31e0593876057857e41d17ee41af1df1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05816",
    "kind": "arxiv",
    "version": 1
  }
}