Pith Number

pith:KYWJTHPM

pith:2010:KYWJTHPM4ND24KHANIBVR32TZN

not attested not anchored not stored refs pending

Non cancellation for smooth contractible affine threefolds

Adrien Dubouloz (IMB), Lucy Moser-Jauslin (IMB), Pierre-Marie Poloni (IMB)

arxiv:1004.4723 v1 · 2010-04-27 · 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{KYWJTHPM4ND24KHANIBVR32TZN}

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	2026-05-18T02:24:16.020861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

562c999dece347ae28e06a0358ef53cb6a3869ef7edb4ea46c035f62834d26d0

Aliases

arxiv: 1004.4723 · arxiv_version: 1004.4723v1 · doi: 10.48550/arxiv.1004.4723 · pith_short_12: KYWJTHPM4ND2 · pith_short_16: KYWJTHPM4ND24KHA · pith_short_8: KYWJTHPM

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/KYWJTHPM4ND24KHANIBVR32TZN \
  | 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: 562c999dece347ae28e06a0358ef53cb6a3869ef7edb4ea46c035f62834d26d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a9dc968ef24b499b693cabbfebbb738dd52fbe6ed236a0b8ce1c157eb0abf98",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2010-04-27T06:36:12Z",
    "title_canon_sha256": "ea920b62d0dac2fd6416f42769f2830da40c94d6461148f2c18e944992ef34cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1004.4723",
    "kind": "arxiv",
    "version": 1
  }
}