Pith Number

pith:OPF5SDAK

pith:2017:OPF5SDAKLXNAAJ7PXBA6ISEHY5

not attested not anchored not stored refs pending

Isomorphism problems for Hopf-Galois structures on separable field extensions

Alan Koch, Paul J. Truman, Robert Underwood, Timothy Kohl

arxiv:1711.05554 v2 · 2017-11-15 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPF5SDAKLXNAAJ7PXBA6ISEHY5}

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	2026-05-18T00:30:21.664819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73cbd90c0a5dda0027efb841e44887c75721d8b5feb2ce287f11d55a3bcebb84

Aliases

arxiv: 1711.05554 · arxiv_version: 1711.05554v2 · doi: 10.48550/arxiv.1711.05554 · pith_short_12: OPF5SDAKLXNA · pith_short_16: OPF5SDAKLXNAAJ7P · pith_short_8: OPF5SDAK

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/OPF5SDAKLXNAAJ7PXBA6ISEHY5 \
  | 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: 73cbd90c0a5dda0027efb841e44887c75721d8b5feb2ce287f11d55a3bcebb84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6a1b9e809e10183f04ffa620212e8af539f6a60a0f267411b376d67bf5bbd56",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-11-15T13:11:26Z",
    "title_canon_sha256": "c8835f7b8e44ed5f606cb4ad37dc72da053ffd0a4511af4eaaa4ad926b03a2fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.05554",
    "kind": "arxiv",
    "version": 2
  }
}