Pith Number

pith:CDRC7IVG

pith:2018:CDRC7IVG23TQLYD46DHYF4NLPP

not attested not anchored not stored refs pending

A new hierarchy for automaton semigroups

Ines Klimann, Laurent Bartholdi, Matthieu Picantin, Thibault Godin

arxiv:1803.09991 v2 · 2018-03-27 · cs.FL · 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{CDRC7IVG23TQLYD46DHYF4NLPP}

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	2026-05-18T00:16:07.607891Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10e22fa2a6d6e705e07cf0cf82f1ab7be9c380f5d08bb1319547d194d268b9cb

Aliases

arxiv: 1803.09991 · arxiv_version: 1803.09991v2 · doi: 10.48550/arxiv.1803.09991 · pith_short_12: CDRC7IVG23TQ · pith_short_16: CDRC7IVG23TQLYD4 · pith_short_8: CDRC7IVG

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/CDRC7IVG23TQLYD46DHYF4NLPP \
  | 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: 10e22fa2a6d6e705e07cf0cf82f1ab7be9c380f5d08bb1319547d194d268b9cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28d7631a901d89e9f4700e33e6d06ae950ebf0375179f4212aa7bc94117abf11",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-03-27T09:52:19Z",
    "title_canon_sha256": "1f15dc3d43db9b299a2fb146042123e253c9bb739a0c29cf2e2a2a91470d4ce9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09991",
    "kind": "arxiv",
    "version": 2
  }
}