Pith Number

pith:NYFS5UHL

pith:2017:NYFS5UHL2RT3SBKSZ5IADVAS7P

not attested not anchored not stored refs pending

Characteristic class and the epsilon factor of an \'etale sheaf

Enlin Yang, Naoya Umezaki, Yigeng Zhao

arxiv:1701.02841 v4 · 2017-01-11 · math.AG · math.NT

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NYFS5UHL2RT3SBKSZ5IADVAS7P}

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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.

Cited by

1 paper in Pith

Characteristic Epsilon Cycles of $\ell$-adic Sheaves on Varieties

Receipt and verification

First computed	2026-05-18T00:20:52.437066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e0b2ed0ebd467b90552cf5001d412fbe7e448bb198e7483b00b59ffb0ded377

Aliases

arxiv: 1701.02841 · arxiv_version: 1701.02841v4 · doi: 10.48550/arxiv.1701.02841 · pith_short_12: NYFS5UHL2RT3 · pith_short_16: NYFS5UHL2RT3SBKS · pith_short_8: NYFS5UHL

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/NYFS5UHL2RT3SBKSZ5IADVAS7P \
  | 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: 6e0b2ed0ebd467b90552cf5001d412fbe7e448bb198e7483b00b59ffb0ded377

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1267fc95e56f3ed82f05f840e779f3628768939794bfd915f71e243896ce80ab",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-01-11T03:52:30Z",
    "title_canon_sha256": "bc32bcfe9619cdd0abbd9ae4cc4301c4b9369e22649206a58bb113b222437b07"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.02841",
    "kind": "arxiv",
    "version": 4
  }
}