Pith Number

pith:Z4DRBLGS

pith:2026:Z4DRBLGSBSQNGRGIUFOQYLWH74

not attested not anchored not stored refs pending

Distribution of signless Laplacian eigenvalues and degree sequence

D. Tracina, L. S. de Lima, M. Darougheh, Saieed Akbari

arxiv:2605.27405 v1 · 2026-05-04 · math.CO · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z4DRBLGSBSQNGRGIUFOQYLWH74}

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	2026-05-28T00:05:17.147887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf0710acd20ca0d344c8a15d0c2ec7ff0d6faa661c71ca74cc9dfaa469b9a7fb

Aliases

arxiv: 2605.27405 · arxiv_version: 2605.27405v1 · doi: 10.48550/arxiv.2605.27405 · pith_short_12: Z4DRBLGSBSQN · pith_short_16: Z4DRBLGSBSQNGRGI · pith_short_8: Z4DRBLGS

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/Z4DRBLGSBSQNGRGIUFOQYLWH74 \
  | 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: cf0710acd20ca0d344c8a15d0c2ec7ff0d6faa661c71ca74cc9dfaa469b9a7fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9fddf3711d6084493b6f77cbe1c48ef4d819d079882e49deade29a3cbc671abe",
    "cross_cats_sorted": [
      "math.SP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2026-05-04T19:40:31Z",
    "title_canon_sha256": "5c605591677b757e06ac5fe4a48ebe30905fe000beefeab3ad2bb6805947a4bc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.27405",
    "kind": "arxiv",
    "version": 1
  }
}