Pith Number

pith:2EWPTXGJ

pith:2019:2EWPTXGJFA76OA4NUTMMJCZ5OA

not attested not anchored not stored refs pending

Chern numbers of uniruled threefolds

Luca Tasin, Stefan Schreieder

arxiv:1906.01397 v1 · 2019-06-04 · math.AG · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EWPTXGJFA76OA4NUTMMJCZ5OA}

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	2026-05-17T23:44:16.769202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12cf9dcc9283fe7038da4d8c48b3d703754724e287706f6b774971baf2a3dd0

Aliases

arxiv: 1906.01397 · arxiv_version: 1906.01397v1 · doi: 10.48550/arxiv.1906.01397 · pith_short_12: 2EWPTXGJFA76 · pith_short_16: 2EWPTXGJFA76OA4N · pith_short_8: 2EWPTXGJ

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/2EWPTXGJFA76OA4NUTMMJCZ5OA \
  | 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: d12cf9dcc9283fe7038da4d8c48b3d703754724e287706f6b774971baf2a3dd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "156c56bad6aa80abf6fa4d449196273f8285593ecdd7b879560d5eec80d6c6ff",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-06-04T13:10:00Z",
    "title_canon_sha256": "e7322e0194a26aa176fac9efc490e1d2cc639f614a422900cccd9e8f1f94f242"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.01397",
    "kind": "arxiv",
    "version": 1
  }
}