Pith Number

pith:BUTGLG7P

pith:2019:BUTGLG7PQLDIO3LIXXTOBT6NLO

not attested not anchored not stored refs pending

A characterization of maximal 2-dimensional subgraphs of transitive graphs

Henning Koehler

arxiv:1904.03558 v1 · 2019-04-07 · cs.DM · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BUTGLG7PQLDIO3LIXXTOBT6NLO}

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	2026-05-17T23:49:08.416965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d26659bef82c6876d68bde6e0cfcd5bb76ab1947d9cb6cc445755d5a79ee8c3

Aliases

arxiv: 1904.03558 · arxiv_version: 1904.03558v1 · doi: 10.48550/arxiv.1904.03558 · pith_short_12: BUTGLG7PQLDI · pith_short_16: BUTGLG7PQLDIO3LI · pith_short_8: BUTGLG7P

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/BUTGLG7PQLDIO3LIXXTOBT6NLO \
  | 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: 0d26659bef82c6876d68bde6e0cfcd5bb76ab1947d9cb6cc445755d5a79ee8c3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "867f346534a1615c744e255223c00bc2608624d63e407c01e5721abdc2d968d2",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-04-07T00:46:58Z",
    "title_canon_sha256": "fe9eb81b082cb3b5952b01a6ee45f38505d3429d88465e02e0c541f557632a40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.03558",
    "kind": "arxiv",
    "version": 1
  }
}