Pith Number

pith:LZF66AWP

pith:2014:LZF66AWPRJORSBDHHONDQMNKBR

not attested not anchored not stored refs pending

On the fundamental groups of normal varieties

Alexandru Dimca, Donu Arapura, Richard Hain

arxiv:1412.1483 v2 · 2014-12-03 · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LZF66AWPRJORSBDHHONDQMNKBR}

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	2026-05-18T00:36:33.674606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5e4bef02cf8a5d1904673b9a3831aa0c46c41fdf031701d31e88400d1845d568

Aliases

arxiv: 1412.1483 · arxiv_version: 1412.1483v2 · doi: 10.48550/arxiv.1412.1483 · pith_short_12: LZF66AWPRJOR · pith_short_16: LZF66AWPRJORSBDH · pith_short_8: LZF66AWP

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/LZF66AWPRJORSBDHHONDQMNKBR \
  | 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: 5e4bef02cf8a5d1904673b9a3831aa0c46c41fdf031701d31e88400d1845d568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e63ae1ad15718438a0fd59f286c02b6eeb74dd3b1a7ff10199140e12668290db",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2014-12-03T21:00:42Z",
    "title_canon_sha256": "7629dc15ee3c5e59ba0ecbb3ea0ada4a768bdbb9229cbb981087b9318b19e873"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.1483",
    "kind": "arxiv",
    "version": 2
  }
}