Pith Number

pith:DYRPQ4TJ

pith:2018:DYRPQ4TJIOAXFMPDTHGHC5VIRD

not attested not anchored not stored refs pending

Supersimple structures with a dense independent subset

Alexander Berenstein, Evgueni Vassiliev, Juan Felipe Carmona

arxiv:1803.07215 v1 · 2018-03-20 · 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{DYRPQ4TJIOAXFMPDTHGHC5VIRD}

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	2026-05-18T00:20:33.957555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e22f87269438172b1e399cc7176a888fca2cf7f45b08ac1b6b0e5c6c3f1b188

Aliases

arxiv: 1803.07215 · arxiv_version: 1803.07215v1 · doi: 10.48550/arxiv.1803.07215 · pith_short_12: DYRPQ4TJIOAX · pith_short_16: DYRPQ4TJIOAXFMPD · pith_short_8: DYRPQ4TJ

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/DYRPQ4TJIOAXFMPDTHGHC5VIRD \
  | 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: 1e22f87269438172b1e399cc7176a888fca2cf7f45b08ac1b6b0e5c6c3f1b188

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "341515bf22039125738e7da4332a2b40b2628ce10b9262ecf6a29e9ed2a318a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-03-20T01:54:33Z",
    "title_canon_sha256": "3e3e0436e44b07081319fd39c2c95fd5b6a1043573606e49f6873cf6faa4b371"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07215",
    "kind": "arxiv",
    "version": 1
  }
}