Pith Number

pith:FQDVZS4B

pith:2006:FQDVZS4BDVV7QSYFHPPG3X4V4K

not attested not anchored not stored refs pending

Intersections of Magnus subgroups and embedding theorems for cyclically presented groups

James Howie, Martin Edjvet

arxiv:math/0609147 v1 · 2006-09-05 · 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{FQDVZS4BDVV7QSYFHPPG3X4V4K}

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	2026-05-18T04:33:27.505131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c075ccb811d6bf84b053bde6ddf95e28016b2b8a5d4eb781ec4ccc49c711e80

Aliases

arxiv: math/0609147 · arxiv_version: math/0609147v1 · doi: 10.48550/arxiv.math/0609147 · pith_short_12: FQDVZS4BDVV7 · pith_short_16: FQDVZS4BDVV7QSYF · pith_short_8: FQDVZS4B

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/FQDVZS4BDVV7QSYFHPPG3X4V4K \
  | 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: 2c075ccb811d6bf84b053bde6ddf95e28016b2b8a5d4eb781ec4ccc49c711e80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e436b8d98dd75827fe63022388d0f6f730acf79bc1f864b8fa283dc6a0d1bae",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GR",
    "submitted_at": "2006-09-05T15:57:42Z",
    "title_canon_sha256": "a0edd40540d61dd32982b1a0ce0d314754c254f87a2ecea228af892629eae8a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0609147",
    "kind": "arxiv",
    "version": 1
  }
}