Pith Number

pith:UZ2H2LDD

pith:2017:UZ2H2LDDBR25N2F6BKAR54XFGT

not attested not anchored not stored refs pending

Marde\v{s}i\'c conjecture and free products of Boolean algebras

Gonzalo Mart\'inez-Cervantes, Grzegorz Plebanek

arxiv:1711.10395 v1 · 2017-11-28 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UZ2H2LDDBR25N2F6BKAR54XFGT}

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	2026-05-18T00:29:22.268268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6747d2c630c75d6e8be0a811ef2e534c75deb4ec3c598809c0c2e81b21a5653

Aliases

arxiv: 1711.10395 · arxiv_version: 1711.10395v1 · doi: 10.48550/arxiv.1711.10395 · pith_short_12: UZ2H2LDDBR25 · pith_short_16: UZ2H2LDDBR25N2F6 · pith_short_8: UZ2H2LDD

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/UZ2H2LDDBR25N2F6BKAR54XFGT \
  | 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: a6747d2c630c75d6e8be0a811ef2e534c75deb4ec3c598809c0c2e81b21a5653

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d3d52cb6996f5bc0b66b6022394c5a79b8c57a44e94f92f88b6e3d8fb31c4a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2017-11-28T16:52:25Z",
    "title_canon_sha256": "01f69acd676109f8dd4fcc182ce4a287e9ae6bb81c556319ce6a21b5bf72d6a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.10395",
    "kind": "arxiv",
    "version": 1
  }
}