Pith Number

pith:WUKP7DSA

pith:2018:WUKP7DSABSZVCD37IKPD3YUQHR

not attested not anchored not stored refs pending

Normal bundles on the exceptional sets of simple small resolutions

Rong Du, Xinyi Fang

arxiv:1812.10905 v1 · 2018-12-28 · 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{WUKP7DSABSZVCD37IKPD3YUQHR}

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	2026-05-17T23:57:16.800548Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b514ff8e400cb3510f7f429e3de2903c5e8177ff915b7907ff78556d34f9ea6d

Aliases

arxiv: 1812.10905 · arxiv_version: 1812.10905v1 · doi: 10.48550/arxiv.1812.10905 · pith_short_12: WUKP7DSABSZV · pith_short_16: WUKP7DSABSZVCD37 · pith_short_8: WUKP7DSA

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/WUKP7DSABSZVCD37IKPD3YUQHR \
  | 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: b514ff8e400cb3510f7f429e3de2903c5e8177ff915b7907ff78556d34f9ea6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cf0e79f3ff7f6eb4a6987ceb9ceddee9610309923734864fa5d287d7b666f78",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2018-12-28T06:28:30Z",
    "title_canon_sha256": "dc4e446a1af35680e16c269943f0ea606edc86e61505ca858931a05390af980e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.10905",
    "kind": "arxiv",
    "version": 1
  }
}