Pith Number

pith:5VAMCGJ2

pith:2014:5VAMCGJ2HMQM5MNJRHJJYTBLPS

not attested not anchored not stored refs pending

The joy of implications, aka pure Horn functions: mainly a survey

Marcel Wild

arxiv:1411.6432 v4 · 2014-11-24 · 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{5VAMCGJ2HMQM5MNJRHJJYTBLPS}

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	2026-05-18T00:49:52.796304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed40c1193a3b20ceb1a989d29c4c2b7c9b575891c5d0b1bbb5150e355ee3610b

Aliases

arxiv: 1411.6432 · arxiv_version: 1411.6432v4 · doi: 10.48550/arxiv.1411.6432 · pith_short_12: 5VAMCGJ2HMQM · pith_short_16: 5VAMCGJ2HMQM5MNJ · pith_short_8: 5VAMCGJ2

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/5VAMCGJ2HMQM5MNJRHJJYTBLPS \
  | 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: ed40c1193a3b20ceb1a989d29c4c2b7c9b575891c5d0b1bbb5150e355ee3610b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c41a6ba3ac17ed7a07e88cf0f222cd50b11c45a8448dbd35f9d253d7c5893a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-11-24T12:45:29Z",
    "title_canon_sha256": "f2392247a357d919749bfa83c002a58ef2bd648fad6407c792c8ec213cc0a9fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.6432",
    "kind": "arxiv",
    "version": 4
  }
}