Pith Number

pith:JVTWJS2P

pith:2015:JVTWJS2PB6HKUYZ7WNXENQV7IC

not attested not anchored not stored refs pending

Subgroup Isomorphism Problem for Units of Integral Group Rings

Leo Margolis

arxiv:1511.04550 v2 · 2015-11-14 · math.RA · math.GR · math.RT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JVTWJS2PB6HKUYZ7WNXENQV7IC}

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	2026-05-18T01:13:16.314596Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d6764cb4f0f8eaa633fb36e46c2bf40b5cc4552b784b1a5d7d4ea9c3501b6d9

Aliases

arxiv: 1511.04550 · arxiv_version: 1511.04550v2 · doi: 10.48550/arxiv.1511.04550 · pith_short_12: JVTWJS2PB6HK · pith_short_16: JVTWJS2PB6HKUYZ7 · pith_short_8: JVTWJS2P

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/JVTWJS2PB6HKUYZ7WNXENQV7IC \
  | 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: 4d6764cb4f0f8eaa633fb36e46c2bf40b5cc4552b784b1a5d7d4ea9c3501b6d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d55e02b37e7b4d31917d108d1170529bbcbe52230909744ee260d771e75cba45",
    "cross_cats_sorted": [
      "math.GR",
      "math.RT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2015-11-14T12:09:02Z",
    "title_canon_sha256": "7054be3ed4d27b65ea6e6db2ca36bca6d9e2546f8e4828aa06d8d34275117929"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.04550",
    "kind": "arxiv",
    "version": 2
  }
}