Pith Number

pith:FDWEYYEJ

pith:2020:FDWEYYEJO6KCLABMYNQJM6XEWS

not attested not anchored not stored refs pending

Primer on inverse semigroups I

Mark V Lawson

arxiv:2006.01628 v1 · 2020-05-29 · math.GR · 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{FDWEYYEJO6KCLABMYNQJM6XEWS}

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	2026-07-05T01:07:32.822428Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28ec4c6089779425802cc360967ae4b4aee770aa0c27e95169a048a8cba47901

Aliases

arxiv: 2006.01628 · arxiv_version: 2006.01628v1 · doi: 10.48550/arxiv.2006.01628 · pith_short_12: FDWEYYEJO6KC · pith_short_16: FDWEYYEJO6KCLABM · pith_short_8: FDWEYYEJ

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/FDWEYYEJO6KCLABMYNQJM6XEWS \
  | 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: 28ec4c6089779425802cc360967ae4b4aee770aa0c27e95169a048a8cba47901

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0f262bafdfb61733c6e98b1d234facf4d04ea684ad36d0ec4d478a8e943d83d",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2020-05-29T10:32:09Z",
    "title_canon_sha256": "e04497a3903e0676ff80904a0aec3300bb2d7a59bb2557c3b82121cd01b3b57d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.01628",
    "kind": "arxiv",
    "version": 1
  }
}