Pith Number

pith:J44LYO6S

pith:2018:J44LYO6SPQMCUQAN6CDBYWA76K

not attested not anchored not stored refs pending

Canonicity and normalisation for Dependent Type Theory

Thierry Coquand

arxiv:1810.09367 v1 · 2018-10-22 · cs.PL

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J44LYO6SPQMCUQAN6CDBYWA76K}

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

Shallow Embedding of Type Theory is Morally Correct

Receipt and verification

First computed	2026-05-18T00:02:40.334996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4f38bc3bd27c182a400df0861c581ff2812414a166655013695aa9bb26940052

Aliases

arxiv: 1810.09367 · arxiv_version: 1810.09367v1 · doi: 10.48550/arxiv.1810.09367 · pith_short_12: J44LYO6SPQMC · pith_short_16: J44LYO6SPQMCUQAN · pith_short_8: J44LYO6S

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/J44LYO6SPQMCUQAN6CDBYWA76K \
  | 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: 4f38bc3bd27c182a400df0861c581ff2812414a166655013695aa9bb26940052

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62237144121a3cc346c14c6d5a66dc43468aef3809e830b1400d66ef5fe04c15",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-10-22T15:36:39Z",
    "title_canon_sha256": "d6498e276abb3c731c9ae2db1cd2233a4a08a11e1431ffaac5a53216a2337644"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.09367",
    "kind": "arxiv",
    "version": 1
  }
}