Pith Number

pith:YMZA6XAB

pith:2011:YMZA6XAB3GPYL2ERJY77FXB5EO

not attested not anchored not stored refs pending

Graph Reachability and Pebble Automata over Infinite Alphabets

Tony Tan

arxiv:1110.2776 v2 · 2011-10-12 · cs.FL · 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{YMZA6XAB3GPYL2ERJY77FXB5EO}

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	2026-05-18T03:58:13.962999Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c3320f5c01d99f85e8914e3ff2dc3d23a4f7b96d8987509c4afc5950de9f8f89

Aliases

arxiv: 1110.2776 · arxiv_version: 1110.2776v2 · doi: 10.48550/arxiv.1110.2776 · pith_short_12: YMZA6XAB3GPY · pith_short_16: YMZA6XAB3GPYL2ER · pith_short_8: YMZA6XAB

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/YMZA6XAB3GPYL2ERJY77FXB5EO \
  | 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: c3320f5c01d99f85e8914e3ff2dc3d23a4f7b96d8987509c4afc5950de9f8f89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "68e7ca6ad271c804c61a248979c76e895223eff99edceac55378aa0c7c5cb1f4",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2011-10-12T18:23:36Z",
    "title_canon_sha256": "62a141154c3f86ab682d1b159eff53c3bc702fa92631cc0b004d8a90580cf97c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2776",
    "kind": "arxiv",
    "version": 2
  }
}