Pith Number

pith:RPUOER5Y

pith:2010:RPUOER5YWN2XHZ3NRGIFH3UBZM

not attested not anchored not stored refs pending

A Package of Programs for Determination of Some Classes of Subgroupoids

Gheorghe Ivan, Mihai Ivan

arxiv:1012.0491 v1 · 2010-12-02 · 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{RPUOER5YWN2XHZ3NRGIFH3UBZM}

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	2026-05-18T02:23:16.678065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8be8e247b8b37573e76d899053ee81cb285994bf4afb34c0214042011fe262d6

Aliases

arxiv: 1012.0491 · arxiv_version: 1012.0491v1 · doi: 10.48550/arxiv.1012.0491 · pith_short_12: RPUOER5YWN2X · pith_short_16: RPUOER5YWN2XHZ3N · pith_short_8: RPUOER5Y

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/RPUOER5YWN2XHZ3NRGIFH3UBZM \
  | 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: 8be8e247b8b37573e76d899053ee81cb285994bf4afb34c0214042011fe262d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "819e83c5b1298a6522b2df14b3f7eae77561207bc52f8f483e683bfc008541a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2010-12-02T16:52:48Z",
    "title_canon_sha256": "8221325821612d7bf2df095d4fa6aecedc61c7ad185284733ac54cdc683941d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.0491",
    "kind": "arxiv",
    "version": 1
  }
}