Pith Number

pith:OF5XVCNH

pith:2015:OF5XVCNHLR4KLECOACHFQDRIDI

not attested not anchored not stored refs pending

Isospectral drums and simple groups

Koen Thas

arxiv:1507.01968 v1 · 2015-07-06 · 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{OF5XVCNHLR4KLECOACHFQDRIDI}

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	2026-05-18T01:37:10.580081Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

717b7a89a75c78a5904e008e580e281a392c1afddd6f6cbb4102ee84aecc47a5

Aliases

arxiv: 1507.01968 · arxiv_version: 1507.01968v1 · doi: 10.48550/arxiv.1507.01968 · pith_short_12: OF5XVCNHLR4K · pith_short_16: OF5XVCNHLR4KLECO · pith_short_8: OF5XVCNH

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/OF5XVCNHLR4KLECOACHFQDRIDI \
  | 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: 717b7a89a75c78a5904e008e580e281a392c1afddd6f6cbb4102ee84aecc47a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3d240c7cacfd4821681290e58ec93d6687e94430ef84b0d0157240ed67d45fb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-07-06T11:17:10Z",
    "title_canon_sha256": "1db9fb04732ae00cc4f755ed5ff3fbbe6cbcd08d9970f6a5f79b7e7b281eb497"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.01968",
    "kind": "arxiv",
    "version": 1
  }
}