Pith Number

pith:WGYJME7N

pith:2010:WGYJME7NUPC4F735GCFGHK53X4

not attested not anchored not stored refs pending

Sums of Laplace eigenvalues - rotationally symmetric maximizers in the plane

B. A. Siudeja, R. S. Laugesen

arxiv:1009.5326 v1 · 2010-09-27 · 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{WGYJME7NUPC4F735GCFGHK53X4}

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	2026-05-18T04:40:18.816133Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1b09613eda3c5c2ff7d308a63abbbbf094fa525bc3521392dc251c1a1f4c47c

Aliases

arxiv: 1009.5326 · arxiv_version: 1009.5326v1 · doi: 10.48550/arxiv.1009.5326 · pith_short_12: WGYJME7NUPC4 · pith_short_16: WGYJME7NUPC4F735 · pith_short_8: WGYJME7N

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/WGYJME7NUPC4F735GCFGHK53X4 \
  | 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: b1b09613eda3c5c2ff7d308a63abbbbf094fa525bc3521392dc251c1a1f4c47c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffd093e0c68ffe4f818843607328d6422dab97f361214a838b138c8e0a3a91ab",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2010-09-27T16:55:24Z",
    "title_canon_sha256": "2512cf6ad72d3b0d1c526cbaef2c5c9f927fe82d3833359477b02a5fda65ed22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.5326",
    "kind": "arxiv",
    "version": 1
  }
}