Pith Number

pith:PEXXDXC7

pith:2019:PEXXDXC72VDUFLTUDLVP5PYPZ5

not attested not anchored not stored refs pending

Erratum to the paper: Integral cohomology of the Generalized Kummer fourfold

Gr\'egoire Menet, Simon Kapfer

arxiv:1907.07031 v1 · 2019-07-16 · 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{PEXXDXC72VDUFLTUDLVP5PYPZ5}

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	2026-05-17T23:40:28.309206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

792f71dc5fd54742ae741aeafebf0fcf7f51f6d20b3f985eba392efbca301c95

Aliases

arxiv: 1907.07031 · arxiv_version: 1907.07031v1 · doi: 10.48550/arxiv.1907.07031 · pith_short_12: PEXXDXC72VDU · pith_short_16: PEXXDXC72VDUFLTU · pith_short_8: PEXXDXC7

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/PEXXDXC72VDUFLTUDLVP5PYPZ5 \
  | 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: 792f71dc5fd54742ae741aeafebf0fcf7f51f6d20b3f985eba392efbca301c95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85bd15bf6350f196a14795445af674a3105d18f4329e6b1efa0775501d5e5e1b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-07-16T14:27:51Z",
    "title_canon_sha256": "c87813542cf60820726745941cff6c04e3a084e6955e875babd6fea97b5bfa7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07031",
    "kind": "arxiv",
    "version": 1
  }
}