Pith Number

pith:XIVBPSOP

pith:2012:XIVBPSOPQZC6X5UKGHU5GAGULZ

not attested not anchored not stored refs pending

Extending a system in the calculus of structures with a self-dual quantifier

Luca Roversi

arxiv:1212.4483 v1 · 2012-12-18 · 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{XIVBPSOPQZC6X5UKGHU5GAGULZ}

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	2026-05-18T02:50:23.053047Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba2a17c9cf8645ebf68a31e9d300d45e606f674ccfe9ac92e7732058ff500338

Aliases

arxiv: 1212.4483 · arxiv_version: 1212.4483v1 · doi: 10.48550/arxiv.1212.4483 · pith_short_12: XIVBPSOPQZC6 · pith_short_16: XIVBPSOPQZC6X5UK · pith_short_8: XIVBPSOP

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/XIVBPSOPQZC6X5UKGHU5GAGULZ \
  | 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: ba2a17c9cf8645ebf68a31e9d300d45e606f674ccfe9ac92e7732058ff500338

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0c006212814bcf0442ed11a3ab1bc062aeb5c2b1bd8fc478e486f60bd66e6f7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-12-18T20:45:10Z",
    "title_canon_sha256": "73379b59d3b44931e0945b28305fcbf2f56facbd2f01d3cd3008a1781628f4ca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4483",
    "kind": "arxiv",
    "version": 1
  }
}