Pith Number

pith:E45SPQRC

pith:2018:E45SPQRCBD5SMRXMAA2NKW7XQ6

not attested not anchored not stored refs pending

Strong geodetic cores and Cartesian product graphs

Sandi Klav\v{z}ar, Valentin Gledel, Vesna Ir\v{s}i\v{c}

arxiv:1803.11423 v1 · 2018-03-30 · 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{E45SPQRCBD5SMRXMAA2NKW7XQ6}

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	2026-05-18T00:19:43.679588Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

273b27c22208fb2646ec0034d55bf7879088b58a0212f3d77d99f2f9ea843e25

Aliases

arxiv: 1803.11423 · arxiv_version: 1803.11423v1 · doi: 10.48550/arxiv.1803.11423 · pith_short_12: E45SPQRCBD5S · pith_short_16: E45SPQRCBD5SMRXM · pith_short_8: E45SPQRC

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/E45SPQRCBD5SMRXMAA2NKW7XQ6 \
  | 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: 273b27c22208fb2646ec0034d55bf7879088b58a0212f3d77d99f2f9ea843e25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c9cce9fe5ca234b18e0d1d3d821f01f4be80000a1e0971b7bd40c660618a162",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-03-30T11:39:10Z",
    "title_canon_sha256": "26d04cdfa0fc4b9cc5426e224688353cb560c6d9f68673be84f58bc30c271ecc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.11423",
    "kind": "arxiv",
    "version": 1
  }
}