Pith Number

pith:S7C5FCMK

pith:2010:S7C5FCMK4YU2223GYGGQSKKUJP

not attested not anchored not stored refs pending

On canonically fibred algebraic 3-folds - some new examples

Aoxiang Cui, Meng Chen

arxiv:1005.3886 v2 · 2010-05-21 · 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{S7C5FCMK4YU2223GYGGQSKKUJP}

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	2026-05-18T04:05:27.883041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97c5d2898ae629ad6b66c18d0929544bee9524056f93542d574ae63e43a6b265

Aliases

arxiv: 1005.3886 · arxiv_version: 1005.3886v2 · doi: 10.48550/arxiv.1005.3886 · pith_short_12: S7C5FCMK4YU2 · pith_short_16: S7C5FCMK4YU2223G · pith_short_8: S7C5FCMK

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/S7C5FCMK4YU2223GYGGQSKKUJP \
  | 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: 97c5d2898ae629ad6b66c18d0929544bee9524056f93542d574ae63e43a6b265

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a5dfd544c7c5e4fdbc38405c406d236bbe024dc2e42d02884f3f94ee95cae49",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2010-05-21T05:10:18Z",
    "title_canon_sha256": "fbbe4aa437ae5d502646ebdf41daae51fb8f61086102d0d25f8ce98a2dfa468b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3886",
    "kind": "arxiv",
    "version": 2
  }
}