Pith Number

pith:JXSW6DJX

pith:2006:JXSW6DJXHFDSNF473YN6DWFTSI

not attested not anchored not stored refs pending

Solution of a Problem of Barendregt on Sensible lambda-Theories

Benedetto Intrigila, Richard Statman

arxiv:cs/0609080 v2 · 2006-09-14 · 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{JXSW6DJXHFDSNF473YN6DWFTSI}

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	2026-05-18T00:53:03.327655Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4de56f0d37394726979fde1be1d8b3922e095cc9f9aa2a45f9d5e96ad23a8bd2

Aliases

arxiv: cs/0609080 · arxiv_version: cs/0609080v2 · doi: 10.48550/arxiv.cs/0609080 · pith_short_12: JXSW6DJXHFDS · pith_short_16: JXSW6DJXHFDSNF47 · pith_short_8: JXSW6DJX

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/JXSW6DJXHFDSNF473YN6DWFTSI \
  | 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: 4de56f0d37394726979fde1be1d8b3922e095cc9f9aa2a45f9d5e96ad23a8bd2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fc90ce7929f8c14beab056102afb1e45fa41de772ed0ae4d79b597b30b9c3ec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.LO",
    "submitted_at": "2006-09-14T16:01:52Z",
    "title_canon_sha256": "71d3d31b5b56c564086010716d4e829b5a8192e840d7012de2d06c8b42835141"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0609080",
    "kind": "arxiv",
    "version": 2
  }
}