Pith Number

pith:2W3QG46D

pith:2019:2W3QG46DKBA3LGTIDL63VGYVIB

not attested not anchored not stored refs pending

Solutions to Donaldson's hyperk\"ahler reduction on a curve

Carlo Scarpa, Jacopo Stoppa

arxiv:1905.09571 v1 · 2019-05-23 · math.DG · 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{2W3QG46DKBA3LGTIDL63VGYVIB}

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	2026-05-17T23:45:16.697099Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d5b70373c35041b59a681afdba9b15405a5a444c6c6e54efdddd408195ca9d15

Aliases

arxiv: 1905.09571 · arxiv_version: 1905.09571v1 · doi: 10.48550/arxiv.1905.09571 · pith_short_12: 2W3QG46DKBA3 · pith_short_16: 2W3QG46DKBA3LGTI · pith_short_8: 2W3QG46D

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/2W3QG46DKBA3LGTIDL63VGYVIB \
  | 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: d5b70373c35041b59a681afdba9b15405a5a444c6c6e54efdddd408195ca9d15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92870f92eebb6d15258ee9da666bc5935c671787c29e3dcc3440a6caea7a6d51",
    "cross_cats_sorted": [
      "math.AG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-05-23T10:25:59Z",
    "title_canon_sha256": "c2afe7ea7c216e914f925824aec7a83b7b69c6e13479ff324e86171eb7a6012a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09571",
    "kind": "arxiv",
    "version": 1
  }
}