Pith Number

pith:AQDHT2KV

pith:2008:AQDHT2KV2DHCGNRARNW6WOTFMM

not attested not anchored not stored refs pending

The Complexity of Reasoning for Fragments of Default Logic

Arne Meier, Heribert Vollmer, Michael Thomas, Olaf Beyersdorff

arxiv:0808.3884 v4 · 2008-08-28 · cs.CC · 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{AQDHT2KV2DHCGNRARNW6WOTFMM}

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	2026-05-18T04:42:02.082497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

040679e955d0ce2336208b6deb3a65632bc1493eb73e54391d1daa8287c44709

Aliases

arxiv: 0808.3884 · arxiv_version: 0808.3884v4 · doi: 10.48550/arxiv.0808.3884 · pith_short_12: AQDHT2KV2DHC · pith_short_16: AQDHT2KV2DHCGNRA · pith_short_8: AQDHT2KV

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/AQDHT2KV2DHCGNRARNW6WOTFMM \
  | 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: 040679e955d0ce2336208b6deb3a65632bc1493eb73e54391d1daa8287c44709

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd427476e5cacacc208ae280bb97e863ba65560a05eb29616754c83d73be99bb",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2008-08-28T11:14:41Z",
    "title_canon_sha256": "b47b643a884d88c3675f82067787b3235552245ae6c7285ddbc7cf04b3145c80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.3884",
    "kind": "arxiv",
    "version": 4
  }
}