Pith Number

pith:WNQCJ2JT

pith:2018:WNQCJ2JTZU7IOQPUMJNCKBZLAS

not attested not anchored not stored refs pending

A Simple Functional Presentation and an Inductive Correctness Proof of the Horn Algorithm

Ant\'onio Ravara (NOVA LINCS, Dep of Informatics, FCT, NOVA University of Lisbon)

arxiv:1809.04772 v1 · 2018-09-13 · 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{WNQCJ2JTZU7IOQPUMJNCKBZLAS}

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	2026-05-18T00:05:49.668860Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b36024e933cd3e8741f4625a25072b0486a1c729096d115d6366e8e3181050fd

Aliases

arxiv: 1809.04772 · arxiv_version: 1809.04772v1 · doi: 10.48550/arxiv.1809.04772 · pith_short_12: WNQCJ2JTZU7I · pith_short_16: WNQCJ2JTZU7IOQPU · pith_short_8: WNQCJ2JT

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/WNQCJ2JTZU7IOQPUMJNCKBZLAS \
  | 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: b36024e933cd3e8741f4625a25072b0486a1c729096d115d6366e8e3181050fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7be100de0b72074f7bbf5b6004f158e6eebbf06000d9e8a9167918bdd01f1a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-09-13T04:49:05Z",
    "title_canon_sha256": "46d97af07b6a1ec91af66820d8981862f12ba751c7495a93ee86ae47dbb6e2bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.04772",
    "kind": "arxiv",
    "version": 1
  }
}