Pith Number

pith:63QRUFT6

pith:2016:63QRUFT6JQYFY4XUC3VZLC6XZV

not attested not anchored not stored refs pending

The Algebraic Intersection Type Unification Problem

Andrej Dudenhefner, Jakob Rehof, Moritz Martens

arxiv:1611.05672 v5 · 2016-11-17 · 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{63QRUFT6JQYFY4XUC3VZLC6XZV}

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	2026-07-05T06:23:18.223532Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6e11a167e4c305c72f416eb958bd7cd426c84e1df1935940a48237096a1d553

Aliases

arxiv: 1611.05672 · arxiv_version: 1611.05672v5 · doi: 10.48550/arxiv.1611.05672 · pith_short_12: 63QRUFT6JQYF · pith_short_16: 63QRUFT6JQYFY4XU · pith_short_8: 63QRUFT6

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/63QRUFT6JQYFY4XUC3VZLC6XZV \
  | 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: f6e11a167e4c305c72f416eb958bd7cd426c84e1df1935940a48237096a1d553

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "290ef15539b9cca0fc04a2a8b1cbacd8d73e8a2f3f329a149a97fc6ee34aee92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-11-17T13:13:18Z",
    "title_canon_sha256": "fd27bf3de2fd765b8d264083408ef2da9217f2afd202ee986a055c7daf036953"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.05672",
    "kind": "arxiv",
    "version": 5
  }
}