Pith Number

pith:VMPYQKI3

pith:2016:VMPYQKI3Z4JCZT4FHR4JVMF6MA

not attested not anchored not stored refs pending

Piecewise Testable Languages and Nondeterministic Automata

Tom\'a\v{s} Masopust

arxiv:1603.00361 v2 · 2016-03-01 · 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{VMPYQKI3Z4JCZT4FHR4JVMF6MA}

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	2026-05-18T01:05:43.844002Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab1f88291bcf122ccf853c789ab0be601e3ede24f86280a33468f656de577169

Aliases

arxiv: 1603.00361 · arxiv_version: 1603.00361v2 · doi: 10.48550/arxiv.1603.00361 · pith_short_12: VMPYQKI3Z4JC · pith_short_16: VMPYQKI3Z4JCZT4F · pith_short_8: VMPYQKI3

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/VMPYQKI3Z4JCZT4FHR4JVMF6MA \
  | 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: ab1f88291bcf122ccf853c789ab0be601e3ede24f86280a33468f656de577169

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cff625189878cccafed0209328d88b67214011e83bd4e11a7a8a7e58292ecff5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2016-03-01T17:11:05Z",
    "title_canon_sha256": "24aae810881e11b1102fa06e7e2f3faf10a60d6bd998d5ff95971f86d1b588f9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.00361",
    "kind": "arxiv",
    "version": 2
  }
}