Pith Number

pith:PNM3IHRQ

pith:2015:PNM3IHRQ6DEWN5BXM4HOUHL5E7

not attested not anchored not stored refs pending

Equivalence of Deterministic Top-Down Tree-to-String Transducers is Decidable

Gregor Kemper, Helmut Seidl, Sebastian Maneth

arxiv:1503.09163 v2 · 2015-03-31 · 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{PNM3IHRQ6DEWN5BXM4HOUHL5E7}

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	2026-05-18T00:52:02.351506Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b59b41e30f0c966f437670eea1d7d27dcffad90ea705aefe79e72ad2b3852e4

Aliases

arxiv: 1503.09163 · arxiv_version: 1503.09163v2 · doi: 10.48550/arxiv.1503.09163 · pith_short_12: PNM3IHRQ6DEW · pith_short_16: PNM3IHRQ6DEWN5BX · pith_short_8: PNM3IHRQ

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/PNM3IHRQ6DEWN5BXM4HOUHL5E7 \
  | 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: 7b59b41e30f0c966f437670eea1d7d27dcffad90ea705aefe79e72ad2b3852e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "330c1b798d304b52433988ba8b913f4dd0b4597d1b13f0774c24a745aa078ceb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2015-03-31T19:00:25Z",
    "title_canon_sha256": "21362e39ba71cd84be495acfb2c407cdb3ab7b0adcdf915a0f27adcdbf66ba2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.09163",
    "kind": "arxiv",
    "version": 2
  }
}