Pith Number

pith:CPRGMAHT

pith:2013:CPRGMAHTEWPSIESKXVGJBJJ2O4

not attested not anchored not stored refs pending

A Note on Strongly Quasidiagonal Groups

Caleb Eckhardt

arxiv:1309.2205 v1 · 2013-09-09 · math.OA · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CPRGMAHTEWPSIESKXVGJBJJ2O4}

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	2026-05-18T01:58:27.428690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13e26600f3259f24124abd4c90a53a7704ab48eda7566ce19a68ca6fd17cc5be

Aliases

arxiv: 1309.2205 · arxiv_version: 1309.2205v1 · doi: 10.48550/arxiv.1309.2205 · pith_short_12: CPRGMAHTEWPS · pith_short_16: CPRGMAHTEWPSIESK · pith_short_8: CPRGMAHT

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/CPRGMAHTEWPSIESKXVGJBJJ2O4 \
  | 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: 13e26600f3259f24124abd4c90a53a7704ab48eda7566ce19a68ca6fd17cc5be

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c37fbd6cf09c3df43f260651a4761634e6d2a5b9a2565aea58283c9fc5473059",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2013-09-09T16:08:27Z",
    "title_canon_sha256": "4bbdf03eb3ad5618a1787c548f763c1b0062cc3acfe2a09122e84a07ca2e42cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.2205",
    "kind": "arxiv",
    "version": 1
  }
}