Pith Number

pith:6H2ED5GT

pith:2015:6H2ED5GTVSTKMB2OKX4W3ISPZO

not attested not anchored not stored refs pending

Proving Looping and Non-Looping Non-Termination by Finite Automata

Hans Zantema, J\"org Endrullis

arxiv:1505.00478 v1 · 2015-05-03 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6H2ED5GTVSTKMB2OKX4W3ISPZO}

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	2026-05-18T02:17:02.844013Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1f441f4d3aca6a6074e55f96da24fcb88f43a357d10b1b0eee4e1e070e26a84

Aliases

arxiv: 1505.00478 · arxiv_version: 1505.00478v1 · doi: 10.48550/arxiv.1505.00478 · pith_short_12: 6H2ED5GTVSTK · pith_short_16: 6H2ED5GTVSTKMB2O · pith_short_8: 6H2ED5GT

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/6H2ED5GTVSTKMB2OKX4W3ISPZO \
  | 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: f1f441f4d3aca6a6074e55f96da24fcb88f43a357d10b1b0eee4e1e070e26a84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a600b41fdef5ba6cd210e44ce2db860b4ed98961d4af5abcdd9c3851103b1c9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-05-03T21:24:19Z",
    "title_canon_sha256": "b60e53fb752d89eb5ecafa4b912149589b57fa69f9526f0a6e20da90fa3d7158"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.00478",
    "kind": "arxiv",
    "version": 1
  }
}