Pith Number

pith:C5G2EODS

pith:2009:C5G2EODSLASDGNLNO7HFRQGWQ4

not attested not anchored not stored refs pending

An optimization problem for the first weighted eigenvalue problem plus a potential

Juli\'an Fern\'andez Bonder, Leandro M. Del Pezzo

arxiv:0906.2985 v1 · 2009-06-16 · math.AP · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C5G2EODSLASDGNLNO7HFRQGWQ4}

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	2026-05-18T04:19:12.483977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

174da23872582433356d77ce58c0d68701d8eda502fe6e4287d070c4ab3bab93

Aliases

arxiv: 0906.2985 · arxiv_version: 0906.2985v1 · doi: 10.48550/arxiv.0906.2985 · pith_short_12: C5G2EODSLASD · pith_short_16: C5G2EODSLASDGNLN · pith_short_8: C5G2EODS

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/C5G2EODSLASDGNLNO7HFRQGWQ4 \
  | 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: 174da23872582433356d77ce58c0d68701d8eda502fe6e4287d070c4ab3bab93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce3e1793e06c74629b21d133223b35a9f4855bbcbb18f21eddd86872905b531f",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2009-06-16T17:41:30Z",
    "title_canon_sha256": "0f04191b6045cf5812978db8e0074a9874888318968e6bd1e06c7487774cf505"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.2985",
    "kind": "arxiv",
    "version": 1
  }
}