Pith Number

pith:7SJGD3KD

pith:2015:7SJGD3KDZ35FDS34VHN26DCKR2

not attested not anchored not stored refs pending

Deforming nonnormal isolated surface singularities and constructing 3-folds with $\mathbb{P}^1$ as exceptional set

Jan Stevens

arxiv:1512.03642 v1 · 2015-12-11 · 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{7SJGD3KDZ35FDS34VHN26DCKR2}

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	2026-05-18T01:24:31.785130Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc9261ed43cefa51cb7ca9dbaf0c4a8e802c5483b27aa23259057c7057ebb6f4

Aliases

arxiv: 1512.03642 · arxiv_version: 1512.03642v1 · doi: 10.48550/arxiv.1512.03642 · pith_short_12: 7SJGD3KDZ35F · pith_short_16: 7SJGD3KDZ35FDS34 · pith_short_8: 7SJGD3KD

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/7SJGD3KDZ35FDS34VHN26DCKR2 \
  | 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: fc9261ed43cefa51cb7ca9dbaf0c4a8e802c5483b27aa23259057c7057ebb6f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5afa06505a2270dea601bcf0baa3404cc68e6e2572bad8d7a6b7a18f73e4643e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-12-11T14:03:49Z",
    "title_canon_sha256": "6307207951211a877152b49da5f3c16802d95206db788c4d6fc1884cffde034c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.03642",
    "kind": "arxiv",
    "version": 1
  }
}