Pith Number

pith:EZV6CN4Y

pith:2018:EZV6CN4Y7SWGTLWPL7D3RMGHBF

not attested not anchored not stored refs pending

Semi De Morgan logic properly displayed

Alessandra Palmigiano, Fei Liang, Giuseppe Greco, M. Andrew Moshier

arxiv:1809.07933 v2 · 2018-09-21 · math.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{EZV6CN4Y7SWGTLWPL7D3RMGHBF}

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	2026-05-18T00:04:54.344360Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

266be13798fcac69aecf5fc7b8b0c70972454b04cbe8b99ec570c01b80ef3dbe

Aliases

arxiv: 1809.07933 · arxiv_version: 1809.07933v2 · doi: 10.48550/arxiv.1809.07933 · pith_short_12: EZV6CN4Y7SWG · pith_short_16: EZV6CN4Y7SWGTLWP · pith_short_8: EZV6CN4Y

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/EZV6CN4Y7SWGTLWPL7D3RMGHBF \
  | 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: 266be13798fcac69aecf5fc7b8b0c70972454b04cbe8b99ec570c01b80ef3dbe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f3cc5c12175973ea18ba3b5377fac14d805526f7053653457a4f5b0e4ccfd70",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-09-21T03:40:45Z",
    "title_canon_sha256": "32b8f6db1d79960ad901e1adff77d41378a479ac73f89a08ee56adc12a0abd01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.07933",
    "kind": "arxiv",
    "version": 2
  }
}