Pith Number

pith:PWPR6RNE

pith:2006:PWPR6RNEMHV3K3FGT5LWEDOGMD

not attested not anchored not stored refs pending

Elgot Algebras

Jiri Adamek, Jiri Velebil, Stefan Milius

arxiv:cs/0609040 v2 · 2006-09-08 · cs.LO · 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{PWPR6RNEMHV3K3FGT5LWEDOGMD}

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	2026-05-18T00:53:03.334755Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d9f1f45a461ebb56ca69f57620dc660e65cff2a66dd45b1bf58ab57ceaa1fac

Aliases

arxiv: cs/0609040 · arxiv_version: cs/0609040v2 · doi: 10.48550/arxiv.cs/0609040 · pith_short_12: PWPR6RNEMHV3 · pith_short_16: PWPR6RNEMHV3K3FG · pith_short_8: PWPR6RNE

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/PWPR6RNEMHV3K3FGT5LWEDOGMD \
  | 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: 7d9f1f45a461ebb56ca69f57620dc660e65cff2a66dd45b1bf58ab57ceaa1fac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afa76b258eb0df76e31e46b6361fc10b4c77748ebac40035329c8575596275fa",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2006-09-08T08:51:33Z",
    "title_canon_sha256": "7d3b3f0d52f8dae31762c6bac6ec362be57408d14016111381b5a092c91008fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0609040",
    "kind": "arxiv",
    "version": 2
  }
}