Pith Number

pith:7NICJ4M7

pith:2013:7NICJ4M7HAVMV7OHB7RKLFHNF2

not attested not anchored not stored refs pending

Ultimate Positivity is Decidable for Simple Linear Recurrence Sequences

James Worrell, Joel Ouaknine

arxiv:1309.1914 v4 · 2013-09-07 · cs.CC · cs.DM · 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{7NICJ4M7HAVMV7OHB7RKLFHNF2}

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	2026-05-18T00:46:56.040945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb5024f19f382acafdc70fe2a594ed2eb93954c2d07bf18b94c7088de94114b6

Aliases

arxiv: 1309.1914 · arxiv_version: 1309.1914v4 · doi: 10.48550/arxiv.1309.1914 · pith_short_12: 7NICJ4M7HAVM · pith_short_16: 7NICJ4M7HAVMV7OH · pith_short_8: 7NICJ4M7

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/7NICJ4M7HAVMV7OHB7RKLFHNF2 \
  | 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: fb5024f19f382acafdc70fe2a594ed2eb93954c2d07bf18b94c7088de94114b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bef7dc586b0558605cb5c1f61e64fb73305faee193a343cfb7d4c93905083868",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-09-07T22:29:13Z",
    "title_canon_sha256": "36dceff81713d7a64de0aca8a43005d64f1aa86dc3ffba3fc7625c9c4ac4d3fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1914",
    "kind": "arxiv",
    "version": 4
  }
}