Pith Number

pith:4FXCLJXC

pith:2009:4FXCLJXCDXIHGC5RDOSPM2ZDTJ

not attested not anchored not stored refs pending

lim+, delta+, and Non-Permutability of beta-Steps

Claus-Peter Wirth

arxiv:0902.3635 v1 · 2009-02-20 · cs.AI · 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{4FXCLJXCDXIHGC5RDOSPM2ZDTJ}

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	2026-05-18T03:13:22.198701Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e16e25a6e21dd0730bb11ba4f66b239a601a66260d83285069ed7655508760ee

Aliases

arxiv: 0902.3635 · arxiv_version: 0902.3635v1 · doi: 10.48550/arxiv.0902.3635 · pith_short_12: 4FXCLJXCDXIH · pith_short_16: 4FXCLJXCDXIHGC5R · pith_short_8: 4FXCLJXC

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/4FXCLJXCDXIHGC5RDOSPM2ZDTJ \
  | 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: e16e25a6e21dd0730bb11ba4f66b239a601a66260d83285069ed7655508760ee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bd9c6a78b5bfbcd0382d8d9cf792d24519c2c53cef03caaf53a194e31f304d3",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2009-02-20T18:07:28Z",
    "title_canon_sha256": "68392a2d348c048d5a704d6a4739321765e8058f6c57d60a72f13ace4583058e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3635",
    "kind": "arxiv",
    "version": 1
  }
}