Pith Number

pith:D7FHGLHL

pith:2018:D7FHGLHL5ZFLWNRN2LWNE3EV2K

not attested not anchored not stored refs pending

Expressing Linear Orders Requires Exponential-Size DNNFs

Ronald de Haan

arxiv:1807.06397 v3 · 2018-07-17 · cs.CC · 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{D7FHGLHL5ZFLWNRN2LWNE3EV2K}

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	2026-05-17T23:44:43.152220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1fca732cebee4abb362dd2ecd26c95d2918ec546ec9b3fcd92cc1e9f9aae03b8

Aliases

arxiv: 1807.06397 · arxiv_version: 1807.06397v3 · doi: 10.48550/arxiv.1807.06397 · pith_short_12: D7FHGLHL5ZFL · pith_short_16: D7FHGLHL5ZFLWNRN · pith_short_8: D7FHGLHL

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/D7FHGLHL5ZFLWNRN2LWNE3EV2K \
  | 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: 1fca732cebee4abb362dd2ecd26c95d2918ec546ec9b3fcd92cc1e9f9aae03b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7129d73a5482555edf5edd8c7d2f32f78b4ee0e0a47d7a485f33c93e1721a5ed",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-07-17T13:02:55Z",
    "title_canon_sha256": "73257e80f3ed03be601b7876c4faeb6a26d0b054431d0601b2dbbd8514b07b2a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06397",
    "kind": "arxiv",
    "version": 3
  }
}