Pith Number

pith:YGRZP4Z4

pith:2011:YGRZP4Z474UPR2DEBRT5BPPKRM

not attested not anchored not stored refs pending

Characterizations of I-semiregular and I-semiperfect rings

Yongduo Wang

arxiv:1108.2083 v1 · 2011-08-10 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YGRZP4Z474UPR2DEBRT5BPPKRM}

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	2026-05-18T04:15:49.392020Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1a397f33cff28f8e8640c67d0bdea8b380f1f3017d856e77fffe076a9eb464f

Aliases

arxiv: 1108.2083 · arxiv_version: 1108.2083v1 · doi: 10.48550/arxiv.1108.2083 · pith_short_12: YGRZP4Z474UP · pith_short_16: YGRZP4Z474UPR2DE · pith_short_8: YGRZP4Z4

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/YGRZP4Z474UPR2DEBRT5BPPKRM \
  | 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: c1a397f33cff28f8e8640c67d0bdea8b380f1f3017d856e77fffe076a9eb464f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d96b681b8f9a120fa770ac9cd5ec100147b885c223f4a528686b7429d8cc5255",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2011-08-10T02:16:25Z",
    "title_canon_sha256": "29de31e9aceb9aceec845062fe3ee5e4a8a77a73dc7b0843f76f58cb70166e79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2083",
    "kind": "arxiv",
    "version": 1
  }
}