Pith Number

pith:HI4UTV3N

pith:2018:HI4UTV3NIHOUJCMGX6M7ZGJ53Q

not attested not anchored not stored refs pending

The Booleanization of an inverse semigroup

Mark V. Lawson

arxiv:1803.10532 v2 · 2018-03-28 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HI4UTV3NIHOUJCMGX6M7ZGJ53Q}

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	2026-05-17T23:55:59.231563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a3949d76d41dd448986bf99fc993ddc239b4634db4d8f8532489029d27017cc

Aliases

arxiv: 1803.10532 · arxiv_version: 1803.10532v2 · doi: 10.48550/arxiv.1803.10532 · pith_short_12: HI4UTV3NIHOU · pith_short_16: HI4UTV3NIHOUJCMG · pith_short_8: HI4UTV3N

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/HI4UTV3NIHOUJCMGX6M7ZGJ53Q \
  | 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: 3a3949d76d41dd448986bf99fc993ddc239b4634db4d8f8532489029d27017cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bd47768327e3c322bc20d196f0e05a19c8b00f33e07920cbd4b4a44dde2f31d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2018-03-28T11:19:49Z",
    "title_canon_sha256": "4d22be1bab158ddfc8bea3aa63a378bde7fd60b42edb0826f841d740622ed9bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.10532",
    "kind": "arxiv",
    "version": 2
  }
}