Pith Number

pith:LSRQZXJU

pith:2018:LSRQZXJUZIGIQSBQSGQSBMFHBX

not attested not anchored not stored refs pending

An alternative look at the structure of graph inverse semigroups

Serhii Bardyla

arxiv:1806.09671 v2 · 2018-06-25 · 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{LSRQZXJUZIGIQSBQSGQSBMFHBX}

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	2026-05-17T23:48:06.633999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ca30cdd34ca0c88483091a120b0a70df5a81730e9b7c4bfd5fe8cc999f533fb

Aliases

arxiv: 1806.09671 · arxiv_version: 1806.09671v2 · doi: 10.48550/arxiv.1806.09671 · pith_short_12: LSRQZXJUZIGI · pith_short_16: LSRQZXJUZIGIQSBQ · pith_short_8: LSRQZXJU

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/LSRQZXJUZIGIQSBQSGQSBMFHBX \
  | 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: 5ca30cdd34ca0c88483091a120b0a70df5a81730e9b7c4bfd5fe8cc999f533fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac52163fb9ab3328d9ac3d4dec261afb14d5fb87a8b03ee12879d60253651d11",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2018-06-25T19:18:01Z",
    "title_canon_sha256": "e1d706e85a73179a055beb5089bd36fada126722d8ed18349eff68364a5e80fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.09671",
    "kind": "arxiv",
    "version": 2
  }
}