Pith Number

pith:CPQ4DKYB

pith:2011:CPQ4DKYBF5AM36GCP3MSRVEDIB

not attested not anchored not stored refs pending

Intersection Logic in sequent calculus style

Alexis Saurin (Laboratoire CNR PPS, Anastasia Veneti (Department of Mathematics University of Athens Greece), Greece), INRIA Paris France), Simona Ronchi Della Rocca (Universita' di Torino Dipartimento di Informatica Torino Italy), University of Athens, Yiorgos Stavrinos (Department of Mathematics

arxiv:1101.4424 v1 · 2011-01-24 · cs.LO · cs.PL

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

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	2026-05-18T04:31:11.053699Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13e1c1ab012f40cdf8c27ed928d483404ff3c75cde7cb4d483034d2b9e9b08c5

Aliases

arxiv: 1101.4424 · arxiv_version: 1101.4424v1 · doi: 10.48550/arxiv.1101.4424 · pith_short_12: CPQ4DKYBF5AM · pith_short_16: CPQ4DKYBF5AM36GC · pith_short_8: CPQ4DKYB

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/CPQ4DKYBF5AM36GCP3MSRVEDIB \
  | 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: 13e1c1ab012f40cdf8c27ed928d483404ff3c75cde7cb4d483034d2b9e9b08c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8372aa16509e179dceb9e327f7dc0f04d6bf7150128711b5719ace32d3ae20c7",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-01-24T01:39:22Z",
    "title_canon_sha256": "93200dbb1dcf751e72efb3bb6808ad16f209f3fb6746af91b42fa77087b6c02c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4424",
    "kind": "arxiv",
    "version": 1
  }
}