Pith Number

pith:IM2KNDZS

pith:2018:IM2KNDZSALEKLNHGX3Z7WXX33M

not attested not anchored not stored refs pending

On the Complexity of the Cayley Semigroup Membership Problem

Lukas Fleischer

arxiv:1802.00659 v3 · 2018-02-02 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IM2KNDZSALEKLNHGX3Z7WXX33M}

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	2026-05-18T00:18:31.004392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4334a68f3202c8a5b4e6bef3fb5efbdb16cc719df37b755a5fd87c0d9ff71485

Aliases

arxiv: 1802.00659 · arxiv_version: 1802.00659v3 · doi: 10.48550/arxiv.1802.00659 · pith_short_12: IM2KNDZSALEK · pith_short_16: IM2KNDZSALEKLNHG · pith_short_8: IM2KNDZS

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/IM2KNDZSALEKLNHGX3Z7WXX33M \
  | 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: 4334a68f3202c8a5b4e6bef3fb5efbdb16cc719df37b755a5fd87c0d9ff71485

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00e927a85b61d3e8abddf13e0a6827f98abe2370401ae29f961c5e23701f8135",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-02-02T12:29:27Z",
    "title_canon_sha256": "c020c802c9219997d57154020ac36925d5ca2d73d18d8bea7c1795a6cc336b58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00659",
    "kind": "arxiv",
    "version": 3
  }
}