Pith Number

pith:4BQ24EMO

pith:2007:4BQ24EMOCBJEO3QG4HRG4QWO2U

not attested not anchored not stored refs pending

A Presentation for the Dual Symmetric Inverse Monoid

David Easdown, D.G.FitzGerald, James East

arxiv:0707.2439 v1 · 2007-07-17 · 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{4BQ24EMOCBJEO3QG4HRG4QWO2U}

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	2026-05-18T01:36:39.321294Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e061ae118e1052476e06e1e26e42ced53a9e585636114653766a1427224f40f5

Aliases

arxiv: 0707.2439 · arxiv_version: 0707.2439v1 · doi: 10.48550/arxiv.0707.2439 · pith_short_12: 4BQ24EMOCBJE · pith_short_16: 4BQ24EMOCBJEO3QG · pith_short_8: 4BQ24EMO

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/4BQ24EMOCBJEO3QG4HRG4QWO2U \
  | 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: e061ae118e1052476e06e1e26e42ced53a9e585636114653766a1427224f40f5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22c16783630d8136ae0f6f740338e3031c12f3fec091a045362d81501bbc79c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GR",
    "submitted_at": "2007-07-17T06:24:23Z",
    "title_canon_sha256": "eb8978306469dfba2e8865764a8f8715367cc4d75e9d4496e4aac0f811a81005"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0707.2439",
    "kind": "arxiv",
    "version": 1
  }
}