Pith Number

pith:K7ACEWNS

pith:2019:K7ACEWNSG6AYVYB5KWZH7GH55J

not attested not anchored not stored refs pending

Characteristic classes of bundles of K3 manifolds and the Nielsen realization problem

Alexander Kupers, Bena Tshishiku, Jeffrey Giansiracusa

arxiv:1907.07782 v2 · 2019-07-17 · math.AT · math.GT · math.KT

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Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K7ACEWNSG6AYVYB5KWZH7GH55J}

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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

A note on the Nielsen realization problem for K3 surfaces

Receipt and verification

First computed	2026-07-05T01:07:25.348691Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57c02259b237818ae03d55b27f98fdea52be9ae286f724fcd809c09db703f9de

Aliases

arxiv: 1907.07782 · arxiv_version: 1907.07782v2 · doi: 10.48550/arxiv.1907.07782 · pith_short_12: K7ACEWNSG6AY · pith_short_16: K7ACEWNSG6AYVYB5 · pith_short_8: K7ACEWNS

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/K7ACEWNSG6AYVYB5KWZH7GH55J \
  | 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: 57c02259b237818ae03d55b27f98fdea52be9ae286f724fcd809c09db703f9de

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "999f6c987a1b46c104ce7073e1984295dd2202fb244ff0210edef7ff73f088ac",
    "cross_cats_sorted": [
      "math.GT",
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-07-17T21:36:56Z",
    "title_canon_sha256": "3699106b17f8e913f7d9cd4a265c79578a320e36fd491c1250442ac2f1daca8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.07782",
    "kind": "arxiv",
    "version": 2
  }
}