Pith Number

pith:A2Q4XB7N

pith:2009:A2Q4XB7NVCLWBZ3YFOM43IBXTX

not attested not anchored not stored refs pending

Cut-Simulation and Impredicativity

Chad E. Brown, Christoph Benzmueller, Michael Kohlhase

arxiv:0902.0043 v2 · 2009-01-31 · cs.LO · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A2Q4XB7NVCLWBZ3YFOM43IBXTX}

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	2026-05-17T23:51:24.206699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06a1cb87eda89760e7782b99cda0379ddf368957ed5efe36904eb703a0bdba5a

Aliases

arxiv: 0902.0043 · arxiv_version: 0902.0043v2 · doi: 10.48550/arxiv.0902.0043 · pith_short_12: A2Q4XB7NVCLW · pith_short_16: A2Q4XB7NVCLWBZ3Y · pith_short_8: A2Q4XB7N

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/A2Q4XB7NVCLWBZ3YFOM43IBXTX \
  | 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: 06a1cb87eda89760e7782b99cda0379ddf368957ed5efe36904eb703a0bdba5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "481996bb0b144d9421e950d856ed104eb01cf0bb3a89f3165bc656a4b0b8c17b",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-01-31T03:24:08Z",
    "title_canon_sha256": "8757cc5d24b84308e4db577e7be19d71c06b46d1fb933465c614679b78649893"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0043",
    "kind": "arxiv",
    "version": 2
  }
}