Pith Number

pith:Y7X2BEZY

pith:2026:Y7X2BEZY2OWFLY2I4HRAM674DR

not attested not anchored not stored refs pending

Very weak subintuitionistic logics

Mashu Noguchi, Taishi Kurahashi

arxiv:2605.20769 v1 · 2026-05-20 · 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{Y7X2BEZY2OWFLY2I4HRAM674DR}

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	2026-05-21T01:04:53.409967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c7efa09338d3ac55e348e1e2067bfc1c65dd6809d752e840bbdadacfd091ce20

Aliases

arxiv: 2605.20769 · arxiv_version: 2605.20769v1 · doi: 10.48550/arxiv.2605.20769 · pith_short_12: Y7X2BEZY2OWF · pith_short_16: Y7X2BEZY2OWFLY2I · pith_short_8: Y7X2BEZY

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/Y7X2BEZY2OWFLY2I4HRAM674DR \
  | 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: c7efa09338d3ac55e348e1e2067bfc1c65dd6809d752e840bbdadacfd091ce20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dae6f69c916e1b6d37c859c25a5652f14a00b3ce4ce441458b76863ad0c4a2a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2026-05-20T06:12:42Z",
    "title_canon_sha256": "db8a778d13aee8ad18636f579b9375f533f32bde27f5d2b8ae7f5a863a4ba84e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20769",
    "kind": "arxiv",
    "version": 1
  }
}