Pith Number

pith:YU6JWYDE

pith:2020:YU6JWYDEUO3NYBGFIR6F7ABCGC

not attested not anchored not stored refs pending

New explicit constructions of surfaces of general type

Enrico Fatighenti, Lev Borisov

arxiv:2004.02637 v2 · 2020-04-06 · 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{YU6JWYDEUO3NYBGFIR6F7ABCGC}

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.

Cited by

2 papers in Pith

$\mathbb Z/2$-Godeaux surfaces

On equations of fake projective planes with automorphism group of order $21$

Receipt and verification

First computed	2026-07-05T00:57:26.077922Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c53c9b6064a3b6dc04c5447c5f802230980d94b706d8d31f0a9930086abfd0c9

Aliases

arxiv: 2004.02637 · arxiv_version: 2004.02637v2 · doi: 10.48550/arxiv.2004.02637 · pith_short_12: YU6JWYDEUO3N · pith_short_16: YU6JWYDEUO3NYBGF · pith_short_8: YU6JWYDE

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/YU6JWYDEUO3NYBGFIR6F7ABCGC \
  | 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: c53c9b6064a3b6dc04c5447c5f802230980d94b706d8d31f0a9930086abfd0c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ca57fa652bdec23218f834a49846812b6e6a9c415b01d19d0c4a93b0a9b6541",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2020-04-06T12:58:19Z",
    "title_canon_sha256": "10f94217504a8185c979cce04844b94644d9c735eecebb98ed9ff95f716e2b09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.02637",
    "kind": "arxiv",
    "version": 2
  }
}