Pith Number

pith:DDKSRNUO

pith:2015:DDKSRNUOLFGMZAA4K6K5MFDPPV

not attested not anchored not stored refs pending

On the canonical divisor of smooth toroidal compactifications

Gabriele Di Cerbo, Luca F. Di Cerbo

arxiv:1502.06258 v5 · 2015-02-22 · math.AG · math.DG · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDKSRNUOLFGMZAA4K6K5MFDPPV}

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	2026-05-18T00:32:55.763832Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18d528b68e594ccc801c5795d6146f7d4289473974344067c8dc215da36df2d5

Aliases

arxiv: 1502.06258 · arxiv_version: 1502.06258v5 · doi: 10.48550/arxiv.1502.06258 · pith_short_12: DDKSRNUOLFGM · pith_short_16: DDKSRNUOLFGMZAA4 · pith_short_8: DDKSRNUO

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/DDKSRNUOLFGMZAA4K6K5MFDPPV \
  | 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: 18d528b68e594ccc801c5795d6146f7d4289473974344067c8dc215da36df2d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab6c87549aed340a0a896534c8c7207febf65e0bde6ae7a43a63d391a618f30c",
    "cross_cats_sorted": [
      "math.DG",
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-02-22T18:40:12Z",
    "title_canon_sha256": "080bfe176bc0473af2bc2935ef75d3a5c7ca6b6705bd4099748c9a1fa94bc9e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.06258",
    "kind": "arxiv",
    "version": 5
  }
}