Pith Number

pith:C2DFNABF

pith:2004:C2DFNABFQ2JSEWGHL7LYOLTISU

not attested not anchored not stored refs pending

On the Expressive Power of First-Order Boolean Functions in PCF

Prakash Panangaden, Riccardo Pucella

arxiv:cs/0405085 v1 · 2004-05-24 · 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{C2DFNABFQ2JSEWGHL7LYOLTISU}

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	2026-07-04T14:24:43.598275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

168656802586932258c75fd7872e689506dd3b72ff8bb246e46c87bd77453249

Aliases

arxiv: cs/0405085 · arxiv_version: cs/0405085v1 · doi: 10.48550/arxiv.cs/0405085 · pith_short_12: C2DFNABFQ2JS · pith_short_16: C2DFNABFQ2JSEWGH · pith_short_8: C2DFNABF

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/C2DFNABFQ2JSEWGHL7LYOLTISU \
  | 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: 168656802586932258c75fd7872e689506dd3b72ff8bb246e46c87bd77453249

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ddee474b81464dcc6490d103a319c9411586505ffe1f3e10211191cf3b60770",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.PL",
    "submitted_at": "2004-05-24T05:16:33Z",
    "title_canon_sha256": "a2088c89649bbc10aa79d44fe11c0fdf7f3e1a3f299bbb01a9d668763497ff96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0405085",
    "kind": "arxiv",
    "version": 1
  }
}