Pith Number

pith:F4T2NQYQ

pith:2015:F4T2NQYQ5TQ7YWOCWWTKGD3LW5

not attested not anchored not stored refs pending

Mathematical semantics of intuitionistic logic

Sergey A. Melikhov

arxiv:1504.03380 v3 · 2015-04-13 · 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{F4T2NQYQ5TQ7YWOCWWTKGD3LW5}

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	2026-05-18T00:45:20.361052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f27a6c310ece1fc59c2b5a6a30f6bb7775f6a5041cfc357c7b3360d9ca1dfeb

Aliases

arxiv: 1504.03380 · arxiv_version: 1504.03380v3 · doi: 10.48550/arxiv.1504.03380 · pith_short_12: F4T2NQYQ5TQ7 · pith_short_16: F4T2NQYQ5TQ7YWOC · pith_short_8: F4T2NQYQ

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/F4T2NQYQ5TQ7YWOCWWTKGD3LW5 \
  | 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: 2f27a6c310ece1fc59c2b5a6a30f6bb7775f6a5041cfc357c7b3360d9ca1dfeb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42e8d8749649e46beba0e9e877dfb5765d42858146eff373bfbd3ed8b905442e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2015-04-13T22:18:08Z",
    "title_canon_sha256": "9f319cce9afd34920598f4b78aae79dc975570192a05d15d47d32aaa9c67e377"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03380",
    "kind": "arxiv",
    "version": 3
  }
}