Pith Number

pith:VQFFP5HS

pith:2017:VQFFP5HSO2LDZHHSCGV35EW3GB

not attested not anchored not stored refs pending

Pumping Lemma for Higher-order Languages

Kazuyuki Asada, Naoki Kobayashi

arxiv:1705.10699 v1 · 2017-05-30 · 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{VQFFP5HSO2LDZHHSCGV35EW3GB}

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	2026-05-18T00:43:23.755367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac0a57f4f276963c9cf211abbe92db3049631164596ba15d19c8fe14aad5f8b4

Aliases

arxiv: 1705.10699 · arxiv_version: 1705.10699v1 · doi: 10.48550/arxiv.1705.10699 · pith_short_12: VQFFP5HSO2LD · pith_short_16: VQFFP5HSO2LDZHHS · pith_short_8: VQFFP5HS

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/VQFFP5HSO2LDZHHSCGV35EW3GB \
  | 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: ac0a57f4f276963c9cf211abbe92db3049631164596ba15d19c8fe14aad5f8b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9c7c2e7046580742db32e2e76f18fb8535c0a900c748bf9138a477337f61408",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2017-05-30T15:23:19Z",
    "title_canon_sha256": "935c9934a3194a2a3a3ec274195f712f33c2a36e0cbca7568424359c5bfa267e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10699",
    "kind": "arxiv",
    "version": 1
  }
}