Pith Number

pith:PYT3343D

pith:2018:PYT3343DTTYKOWEWIMFRG4TOI6

not attested not anchored not stored refs pending

Visibly Pushdown Languages and Free Profinite Algebras

Andreas Krebs, Klaus-J\"orn Lange, Silke Czarnetzki

arxiv:1810.12731 v1 · 2018-10-30 · 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{PYT3343DTTYKOWEWIMFRG4TOI6}

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.

Cited by

1 paper in Pith

The $\mathsf{AC}^0$-Complexity Of Visibly Pushdown Languages

Receipt and verification

First computed	2026-05-18T00:01:54.312349Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e27bdf3639cf0a75896430b13726e47b0e99607fd61a851724fed474ab5cd5f

Aliases

arxiv: 1810.12731 · arxiv_version: 1810.12731v1 · doi: 10.48550/arxiv.1810.12731 · pith_short_12: PYT3343DTTYK · pith_short_16: PYT3343DTTYKOWEW · pith_short_8: PYT3343D

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/PYT3343DTTYKOWEWIMFRG4TOI6 \
  | 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: 7e27bdf3639cf0a75896430b13726e47b0e99607fd61a851724fed474ab5cd5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87e1990e7a59cea5decbabe3b4fd54fc57433d5d695369ac9f381ebd589eebb9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2018-10-30T13:47:44Z",
    "title_canon_sha256": "601d3e3190a41ab5a43074bfcfc454e0f4da0ab2b09de48a91020608a4b68f1a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.12731",
    "kind": "arxiv",
    "version": 1
  }
}