Pith Number

pith:KT3422UL

pith:2014:KT3422ULW36LAZQZKLDCMHINQT

not attested not anchored not stored refs pending

Optimization problems involving the first Dirichlet eigenvalue and the torsional rigidity

Bozhidar Velichkov, Giuseppe Buttazzo, Michiel van den Berg

arxiv:1403.0114 v3 · 2014-03-01 · 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{KT3422ULW36LAZQZKLDCMHINQT}

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	2026-05-18T02:38:53.027539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

54f7cd6a8bb6fcb0661952c6261d0d84c6d7e1ca3ccf48eef076d4629bb5cbb2

Aliases

arxiv: 1403.0114 · arxiv_version: 1403.0114v3 · doi: 10.48550/arxiv.1403.0114 · pith_short_12: KT3422ULW36L · pith_short_16: KT3422ULW36LAZQZ · pith_short_8: KT3422UL

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/KT3422ULW36LAZQZKLDCMHINQT \
  | 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: 54f7cd6a8bb6fcb0661952c6261d0d84c6d7e1ca3ccf48eef076d4629bb5cbb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08428aeb0f98efffbf168c6fccebcffe688fc920a1404c7dba5fabd4cfe8a555",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-03-01T18:26:11Z",
    "title_canon_sha256": "381c3dce18f8fcd8d98d30c162bdb2c201709829b16095e35fb57541d652a2ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.0114",
    "kind": "arxiv",
    "version": 3
  }
}