Pith Number

pith:REAERTJH

pith:2018:REAERTJHZB4IR7TIA7WQDKN3GA

not attested not anchored not stored refs pending

Extended finite automata and decision problems for matrix semigroups

Ahmet Celal Cem Say, \"Ozlem Salehi

arxiv:1807.05516 v1 · 2018-07-15 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{REAERTJHZB4IR7TIA7WQDKN3GA}

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	2026-05-18T00:10:43.359229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

890048cd27c87888fe6807ed01a9bb300afdad0c0fe8dc58cf8393d301ee7986

Aliases

arxiv: 1807.05516 · arxiv_version: 1807.05516v1 · doi: 10.48550/arxiv.1807.05516 · pith_short_12: REAERTJHZB4I · pith_short_16: REAERTJHZB4IR7TI · pith_short_8: REAERTJH

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/REAERTJHZB4IR7TIA7WQDKN3GA \
  | 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: 890048cd27c87888fe6807ed01a9bb300afdad0c0fe8dc58cf8393d301ee7986

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb6741189b87e787a4a4856e73bda765b2a3b40be714a6521e2bf9920de4d288",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-07-15T09:07:22Z",
    "title_canon_sha256": "461118d2806e6257492203cbba7cab3fcc086e295921e4c8b554c20e93e563f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05516",
    "kind": "arxiv",
    "version": 1
  }
}