Pith Number

pith:XIQTYZPI

pith:2017:XIQTYZPIA72HPYFH536UJE5BCE

not attested not anchored not stored refs pending

Theory Morphisms in Church's Type Theory with Quotation and Evaluation

William M. Farmer

arxiv:1703.02117 v4 · 2017-03-06 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XIQTYZPIA72HPYFH536UJE5BCE}

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	2026-05-18T00:39:28.595196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba213c65e807f477e0a7eefd4493a1110761f5a6a5da77a275ed92a718167bc1

Aliases

arxiv: 1703.02117 · arxiv_version: 1703.02117v4 · doi: 10.48550/arxiv.1703.02117 · pith_short_12: XIQTYZPIA72H · pith_short_16: XIQTYZPIA72HPYFH · pith_short_8: XIQTYZPI

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/XIQTYZPIA72HPYFH536UJE5BCE \
  | 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: ba213c65e807f477e0a7eefd4493a1110761f5a6a5da77a275ed92a718167bc1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c77907912bdfcb4e03b0c99175be21d54f7d989b35265b2ed676caffb92e868",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-03-06T21:30:21Z",
    "title_canon_sha256": "035e63737b8d53fa4221ff4b930d0beb7d8e901a6f07a7b4df3a958ca0b57b32"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02117",
    "kind": "arxiv",
    "version": 4
  }
}