Pith Number

pith:EDZ2DZXS

pith:2015:EDZ2DZXSHHSNQEH2MNVEA2JFQQ

not attested not anchored not stored refs pending

Reflexive Unitary Subsemigroups of Left Simple Semigroups

Attila Nagy

arxiv:1501.01431 v1 · 2015-01-07 · 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{EDZ2DZXSHHSNQEH2MNVEA2JFQQ}

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	2026-05-18T02:29:54.261542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f3a1e6f239e4d810fa636a4069258432b8dbe3e713c0540401ab2989040928

Aliases

arxiv: 1501.01431 · arxiv_version: 1501.01431v1 · doi: 10.48550/arxiv.1501.01431 · pith_short_12: EDZ2DZXSHHSN · pith_short_16: EDZ2DZXSHHSNQEH2 · pith_short_8: EDZ2DZXS

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/EDZ2DZXSHHSNQEH2MNVEA2JFQQ \
  | 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: 20f3a1e6f239e4d810fa636a4069258432b8dbe3e713c0540401ab2989040928

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c4154a509c918f5edc14335fa1bf6fc2e7b0cb4c205d22ae70b85f9726a701e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-01-07T10:25:32Z",
    "title_canon_sha256": "d2af45e7026ea218739fbbe428dd3d7d9308dc62c065b81cb09e5103c6d5106c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.01431",
    "kind": "arxiv",
    "version": 1
  }
}