Pith Number

pith:F4XRTOLD

pith:2019:F4XRTOLDWDJKWH4NQO4GGK2MY7

not attested not anchored not stored refs pending

Equivalence of finite-valued streaming string transducers is decidable

Anca Muscholl, Gabriele Puppis

arxiv:1902.06973 v2 · 2019-02-19 · 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{F4XRTOLDWDJKWH4NQO4GGK2MY7}

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	2026-05-17T23:47:26.026739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f2f19b963b0d2ab1f8d83b8632b4cc7e0e29bfda05b2dc0b52029bec5281503

Aliases

arxiv: 1902.06973 · arxiv_version: 1902.06973v2 · doi: 10.48550/arxiv.1902.06973 · pith_short_12: F4XRTOLDWDJK · pith_short_16: F4XRTOLDWDJKWH4N · pith_short_8: F4XRTOLD

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/F4XRTOLDWDJKWH4NQO4GGK2MY7 \
  | 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: 2f2f19b963b0d2ab1f8d83b8632b4cc7e0e29bfda05b2dc0b52029bec5281503

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f4163c371124f9e141ebeb9497ea1af6f8b5fff7fb82f191880f39eb3e5b688",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2019-02-19T09:49:29Z",
    "title_canon_sha256": "1af9f59fd846ed7fdf92b485f81beac748467c0e532c48c1111af35fefb59c51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.06973",
    "kind": "arxiv",
    "version": 2
  }
}