Pith Number

pith:R7B3GOV5

pith:2014:R7B3GOV5PAB6752DTNGZ6INVUU

not attested not anchored not stored refs pending

Orbit automata as a new tool to attack the order problem in automaton groups

Dmytro Savchuk, Ines Klimann, Matthieu Picantin

arxiv:1411.0158 v2 · 2014-11-01 · math.GR · 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{R7B3GOV5PAB6752DTNGZ6INVUU}

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	2026-05-18T02:32:13.624506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fc3b33abd7803eff7439b4d9f21b5a5034912049ecbf852aa679e452f1f5d0b

Aliases

arxiv: 1411.0158 · arxiv_version: 1411.0158v2 · doi: 10.48550/arxiv.1411.0158 · pith_short_12: R7B3GOV5PAB6 · pith_short_16: R7B3GOV5PAB6752D · pith_short_8: R7B3GOV5

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/R7B3GOV5PAB6752DTNGZ6INVUU \
  | 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: 8fc3b33abd7803eff7439b4d9f21b5a5034912049ecbf852aa679e452f1f5d0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a6a0f6186273af3071b95b3c838710e9fb652191a08f2b8c50ef6b0937813a07",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-11-01T19:24:28Z",
    "title_canon_sha256": "66da1e3ea3512029596d157cd612a402d3c15d451f78d449c6b29507b647754b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.0158",
    "kind": "arxiv",
    "version": 2
  }
}