Pith Number

pith:GCFORZSO

pith:2012:GCFORZSOOBCGYD7JJXRRRVHIHT

not attested not anchored not stored refs pending

Copies of classical logic in intuitionistic logic

Jaime Gaspar

arxiv:1211.1850 v1 · 2012-11-08 · 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{GCFORZSOOBCGYD7JJXRRRVHIHT}

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	2026-05-18T03:41:13.333783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

308ae8e64e70446c0fe94de318d4e83cfc1d135b2f29a89de7a1ade502d886ad

Aliases

arxiv: 1211.1850 · arxiv_version: 1211.1850v1 · doi: 10.48550/arxiv.1211.1850 · pith_short_12: GCFORZSOOBCG · pith_short_16: GCFORZSOOBCGYD7J · pith_short_8: GCFORZSO

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/GCFORZSOOBCGYD7JJXRRRVHIHT \
  | 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: 308ae8e64e70446c0fe94de318d4e83cfc1d135b2f29a89de7a1ade502d886ad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93965c0f3f02f07c9272a964f602b9e9a09117e26d5b71950ab3c17dac0d0e7c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-11-08T13:40:18Z",
    "title_canon_sha256": "f01d3d2a11beafa1f4e0c3cd973a8ddc51f3e643fbc2a4291ef8323d0c48947d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.1850",
    "kind": "arxiv",
    "version": 1
  }
}