Pith Number

pith:YSENRC3I

pith:2017:YSENRC3I2T3HSSHLIA54IZEADT

not attested not anchored not stored refs pending

On the subsemigroup complex of an aperiodic Brandt semigroup

John Rhodes, Pedro V. Silva, Stuart Margolis

arxiv:1705.04956 v1 · 2017-05-14 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSENRC3I2T3HSSHLIA54IZEADT}

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	2026-05-18T00:44:34.232044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c488d88b68d4f67948eb403bc464801cd1f7d9a0817df5f64c61e7891f1db23c

Aliases

arxiv: 1705.04956 · arxiv_version: 1705.04956v1 · doi: 10.48550/arxiv.1705.04956 · pith_short_12: YSENRC3I2T3H · pith_short_16: YSENRC3I2T3HSSHL · pith_short_8: YSENRC3I

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/YSENRC3I2T3HSSHLIA54IZEADT \
  | 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: c488d88b68d4f67948eb403bc464801cd1f7d9a0817df5f64c61e7891f1db23c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "125c62a1252e2128a2df0424738f6ee60e78482720c5f529559594aa7a705674",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2017-05-14T12:25:36Z",
    "title_canon_sha256": "a028cc441b3c73b2a36c338166c1a6b72b7d4f9042b114a0fffaf73303db7316"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04956",
    "kind": "arxiv",
    "version": 1
  }
}