Pith Number

pith:WPW3FV4W

pith:2026:WPW3FV4WKQUXCYDO6OFQVSIMMU

not attested not anchored not stored refs pending

Setoids in Intensional Type Theory

Andrew M. Pitts

arxiv:2607.23671 v1 · 2026-07-26 · 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{WPW3FV4WKQUXCYDO6OFQVSIMMU}

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	2026-07-28T01:23:04.648210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3edb2d796542971606ef38b0ac90c6505a2c45e48d7c0529b904cfb821225d8

Aliases

arxiv: 2607.23671 · arxiv_version: 2607.23671v1 · doi: 10.48550/arxiv.2607.23671 · pith_short_12: WPW3FV4WKQUX · pith_short_16: WPW3FV4WKQUXCYDO · pith_short_8: WPW3FV4W

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/WPW3FV4WKQUXCYDO6OFQVSIMMU \
  | 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: b3edb2d796542971606ef38b0ac90c6505a2c45e48d7c0529b904cfb821225d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0f6e2177182dcc6ef1264210379183bbcc112208f258e879f2497611643464d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-07-26T14:07:38Z",
    "title_canon_sha256": "907b72757a45a8ba893c93f2c9d333b6afe1e6b3f833cfd5a2a3511b372ec337"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.23671",
    "kind": "arxiv",
    "version": 1
  }
}