Pith Number

pith:E62AXZEU

pith:2014:E62AXZEUCR4HYNHUTZYHCDCKGG

not attested not anchored not stored refs pending

Contradiction, Quantum Mechanics, and the Square of Opposition

D\'ecio Krause, Jonas R. B. Arenhart

arxiv:1406.1836 v1 · 2014-06-07 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E62AXZEUCR4HYNHUTZYHCDCKGG}

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	2026-05-18T02:50:12.416203Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27b40be49414787c34f49e70710c4a31b1541f2256a5018418282a7159b3722f

Aliases

arxiv: 1406.1836 · arxiv_version: 1406.1836v1 · doi: 10.48550/arxiv.1406.1836 · pith_short_12: E62AXZEUCR4H · pith_short_16: E62AXZEUCR4HYNHU · pith_short_8: E62AXZEU

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/E62AXZEUCR4HYNHUTZYHCDCKGG \
  | 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: 27b40be49414787c34f49e70710c4a31b1541f2256a5018418282a7159b3722f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad39755848e33aaf19a1943fe3553e51537a419c7c0e533f0c1b19bf142e93e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2014-06-07T00:18:29Z",
    "title_canon_sha256": "14d23e968ad6cf62dbb513f36f62e747ccff53171f3ca67d9dec96a05611aa21"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1836",
    "kind": "arxiv",
    "version": 1
  }
}