Pith Number

pith:ZWNSZ3HG

pith:2016:ZWNSZ3HGS334J7DTUYLRNDZYKO

not attested not anchored not stored refs pending

Varieties of Boolean inverse semigroups

Friedrich Wehrung (LMNO)

arxiv:1610.07447 v1 · 2016-10-24 · 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{ZWNSZ3HGS334J7DTUYLRNDZYKO}

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	2026-05-18T01:01:30.089234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd9b2cece696f7c4fc73a617168f3853808f860a3e03aaf9b3488d20c143a4fb

Aliases

arxiv: 1610.07447 · arxiv_version: 1610.07447v1 · doi: 10.48550/arxiv.1610.07447 · pith_short_12: ZWNSZ3HGS334 · pith_short_16: ZWNSZ3HGS334J7DT · pith_short_8: ZWNSZ3HG

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/ZWNSZ3HGS334J7DTUYLRNDZYKO \
  | 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: cd9b2cece696f7c4fc73a617168f3853808f860a3e03aaf9b3488d20c143a4fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e89c7ed0fd5a349753c805d6a9d7e6cb850a2ffd4cd8559543764846b7660557",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2016-10-24T14:57:31Z",
    "title_canon_sha256": "c6e6287c717ad279b871dd01e2740044a7cd61e4bb00c1eb0b2d6f16217f98d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.07447",
    "kind": "arxiv",
    "version": 1
  }
}