Pith Number

pith:UM6JLYZO

pith:2014:UM6JLYZOLNUQNHVUMXARL5N6HD

not attested not anchored not stored refs pending

Construction of infinite finitely presented nilsemigroup

Alexey Kanel-Belov, Ilya Ivanov-Pogodaev

arxiv:1412.5221 v3 · 2014-12-16 · 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{UM6JLYZOLNUQNHVUMXARL5N6HD}

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	2026-05-18T01:23:48.392798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a33c95e32e5b69069eb465c115f5be38f82d5d0d1dc2ffc64cb88b6ef681a467

Aliases

arxiv: 1412.5221 · arxiv_version: 1412.5221v3 · doi: 10.48550/arxiv.1412.5221 · pith_short_12: UM6JLYZOLNUQ · pith_short_16: UM6JLYZOLNUQNHVU · pith_short_8: UM6JLYZO

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/UM6JLYZOLNUQNHVUMXARL5N6HD \
  | 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: a33c95e32e5b69069eb465c115f5be38f82d5d0d1dc2ffc64cb88b6ef681a467

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "319c26c92bf978af09d8120a416e1efb9d96523998249812ecd1ef025754b209",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-12-16T22:46:10Z",
    "title_canon_sha256": "4bb772c9de93ba8e2bf8226dc36a2616e42ec82ca448205bbc022a337c680efc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5221",
    "kind": "arxiv",
    "version": 3
  }
}