Pith Number

pith:3ZJTKDVU

pith:2019:3ZJTKDVUV7NDPEQE3ZKTK3VTYD

not attested not anchored not stored refs pending

Reachability Problem in Non-uniform Cellular Automata

Sukanta Das, Sukanya Mukherjee, Sumit Adak

arxiv:1901.08246 v1 · 2019-01-24 · cs.CC · cs.FL · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3ZJTKDVUV7NDPEQE3ZKTK3VTYD}

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	2026-05-17T23:55:37.553520Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de53350eb4afda379204de55356eb3c0d48699b792d79567f63c267b1c32e8d1

Aliases

arxiv: 1901.08246 · arxiv_version: 1901.08246v1 · doi: 10.48550/arxiv.1901.08246 · pith_short_12: 3ZJTKDVUV7ND · pith_short_16: 3ZJTKDVUV7NDPEQE · pith_short_8: 3ZJTKDVU

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/3ZJTKDVUV7NDPEQE3ZKTK3VTYD \
  | 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: de53350eb4afda379204de55356eb3c0d48699b792d79567f63c267b1c32e8d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbb486c9a4d3c06acfb79f04a4a3c022ae6a13b78cfa011b89e0355011f8a554",
    "cross_cats_sorted": [
      "cs.FL",
      "nlin.CD"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-01-24T06:20:49Z",
    "title_canon_sha256": "3f7b7837915800abe2fd24e49a699642cce3213e7789c781628f3e7715a9343e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08246",
    "kind": "arxiv",
    "version": 1
  }
}