Pith Number

pith:JP2QN4HA

pith:2014:JP2QN4HAB443BBWIOUEW75S66L

not attested not anchored not stored refs pending

On the Chern numbers of a smooth threefold

Luca Tasin, Paolo Cascini

arxiv:1412.1686 v2 · 2014-12-04 · math.AG · 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{JP2QN4HAB443BBWIOUEW75S66L}

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	2026-05-18T00:49:52.781497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bf506f0e00f39b086c875096ff65ef2e48bb0f3c319ef5cf48d84e4fa13852d

Aliases

arxiv: 1412.1686 · arxiv_version: 1412.1686v2 · doi: 10.48550/arxiv.1412.1686 · pith_short_12: JP2QN4HAB443 · pith_short_16: JP2QN4HAB443BBWI · pith_short_8: JP2QN4HA

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/JP2QN4HAB443BBWIOUEW75S66L \
  | 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: 4bf506f0e00f39b086c875096ff65ef2e48bb0f3c319ef5cf48d84e4fa13852d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7ae369482e816ead434278dd962781b0393d8de35ee42c47a3007bfaa96083c",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-12-04T14:51:08Z",
    "title_canon_sha256": "b2fffcdca6356bebf1905d4f038a5c4bc717dc135c74f98a7fa5053f4c2daefb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1686",
    "kind": "arxiv",
    "version": 2
  }
}