Pith Number

pith:4B5UIZTP

pith:2013:4B5UIZTPHXYIMATJUFLX2GOKVI

not attested not anchored not stored refs pending

On the Positivity Problem for Simple Linear Recurrence Sequences

James Worrell, Joel Ouaknine

arxiv:1309.1550 v3 · 2013-09-06 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4B5UIZTPHXYIMATJUFLX2GOKVI}

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	2026-05-18T02:53:08.122403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e07b44666f3df0860269a1577d19caaa097ba84b63097f60cb90ddcde51bd1af

Aliases

arxiv: 1309.1550 · arxiv_version: 1309.1550v3 · doi: 10.48550/arxiv.1309.1550 · pith_short_12: 4B5UIZTPHXYI · pith_short_16: 4B5UIZTPHXYIMATJ · pith_short_8: 4B5UIZTP

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/4B5UIZTPHXYIMATJUFLX2GOKVI \
  | 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: e07b44666f3df0860269a1577d19caaa097ba84b63097f60cb90ddcde51bd1af

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e74f1e4447a5bc8e405f676fecd0161a1cd20ffc4ac4bbfa5b6a54bcc609aa4d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-09-06T07:01:00Z",
    "title_canon_sha256": "fc2e35bf71bd29749c18da75cd3c0d8a9e0406d98b5709e01e7633b6b57f1901"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.1550",
    "kind": "arxiv",
    "version": 3
  }
}