Pith Number

pith:G6FSTOQK

pith:2019:G6FSTOQKRA7ZHR5QF7RSAMRZDS

not attested not anchored not stored refs pending

Laplacian Spectral Determination of Path-Friendship Graphs

A.R. Ashrafi, A.Z. Abdian, L.W. Beineke, M.R. Oboudi

arxiv:1903.11121 v1 · 2019-03-26 · 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{G6FSTOQKRA7ZHR5QF7RSAMRZDS}

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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.

Cited by

1 paper in Pith

No two Jellyfish graphs are L-cospectral and Q-cospectral

Receipt and verification

First computed	2026-05-17T23:50:04.118182Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

378b29ba0a883f93c7b02fe32032391c8bf90abb7b198f4613c0b724f75ad65a

Aliases

arxiv: 1903.11121 · arxiv_version: 1903.11121v1 · doi: 10.48550/arxiv.1903.11121 · pith_short_12: G6FSTOQKRA7Z · pith_short_16: G6FSTOQKRA7ZHR5Q · pith_short_8: G6FSTOQK

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/G6FSTOQKRA7ZHR5QF7RSAMRZDS \
  | 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: 378b29ba0a883f93c7b02fe32032391c8bf90abb7b198f4613c0b724f75ad65a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f34b538a1725a5db2caebbb52445f8f4187953377f6c3a89c623b0bb3b020a8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2019-03-26T19:16:06Z",
    "title_canon_sha256": "a0c3c18722da51b392a77e0ca0a589761567ad35f7932f3e400469525f8e7b1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11121",
    "kind": "arxiv",
    "version": 1
  }
}