Pith Number

pith:JP3BVXXW

pith:2014:JP3BVXXW5ZCVIFSQPOTLAKDZLE

not attested not anchored not stored refs pending

Subnormal closure of a homomorphism

Emmanuel D. Farjoun, Yoav Segev

arxiv:1405.0090 v1 · 2014-05-01 · math.GR · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JP3BVXXW5ZCVIFSQPOTLAKDZLE}

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	2026-05-18T02:52:49.013247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bf61adef6ee455416507ba6b028795923f6fc327135597792d4dd81736f972d

Aliases

arxiv: 1405.0090 · arxiv_version: 1405.0090v1 · doi: 10.48550/arxiv.1405.0090 · pith_short_12: JP3BVXXW5ZCV · pith_short_16: JP3BVXXW5ZCVIFSQ · pith_short_8: JP3BVXXW

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/JP3BVXXW5ZCVIFSQPOTLAKDZLE \
  | 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: 4bf61adef6ee455416507ba6b028795923f6fc327135597792d4dd81736f972d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fc3d585c20af6fac284abb727a62d484bf42476c8d1a2c9a6e850a95ae1d09de",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-05-01T04:24:03Z",
    "title_canon_sha256": "37e93104af438e26726d11bb98c2eb9b77fa57f90c25cadba50c580a2757617e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.0090",
    "kind": "arxiv",
    "version": 1
  }
}