Pith Number

pith:PCRTE4LN

pith:2019:PCRTE4LNTMPGFKZPLMDLQKSZDU

not attested not anchored not stored refs pending

Typed lambda-calculi and superclasses of regular functions

L\^e Th\`anh D\~ung Nguy\^en

arxiv:1907.00467 v1 · 2019-06-30 · cs.LO · 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{PCRTE4LNTMPGFKZPLMDLQKSZDU}

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	2026-05-17T23:41:51.584977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78a332716d9b1e62ab2f5b06b82a591d0825a1b7c3a6eebb1e5f4fddec8bc051

Aliases

arxiv: 1907.00467 · arxiv_version: 1907.00467v1 · doi: 10.48550/arxiv.1907.00467 · pith_short_12: PCRTE4LNTMPG · pith_short_16: PCRTE4LNTMPGFKZP · pith_short_8: PCRTE4LN

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/PCRTE4LNTMPGFKZPLMDLQKSZDU \
  | 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: 78a332716d9b1e62ab2f5b06b82a591d0825a1b7c3a6eebb1e5f4fddec8bc051

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f3bd09ec71ef7cdf03e5e8b044a9674d78a2aa35ab0d68fa3649d2f1f4b7b47",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-06-30T21:24:59Z",
    "title_canon_sha256": "2452932b757a4a783e668b9946f8be983d37df1405baf31a3281f3822622f219"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.00467",
    "kind": "arxiv",
    "version": 1
  }
}