Pith Number

pith:QIBOQ5N5

pith:2014:QIBOQ5N5JS4UY43RRDRS63W22P

not attested not anchored not stored refs pending

Isoperimetric inequalities for the principal eigenvalue of a membrane and the energy of problems with Robin boundary conditions

Alfred Wagner, Catherine Bandle

arxiv:1403.3249 v2 · 2014-03-13 · 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{QIBOQ5N5JS4UY43RRDRS63W22P}

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	2026-05-18T02:55:58.528051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8202e875bd4cb94c737188e32f6edad3c250882e6e1029952ab36b740dc9f5fb

Aliases

arxiv: 1403.3249 · arxiv_version: 1403.3249v2 · doi: 10.48550/arxiv.1403.3249 · pith_short_12: QIBOQ5N5JS4U · pith_short_16: QIBOQ5N5JS4UY43R · pith_short_8: QIBOQ5N5

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/QIBOQ5N5JS4UY43RRDRS63W22P \
  | 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: 8202e875bd4cb94c737188e32f6edad3c250882e6e1029952ab36b740dc9f5fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "043106ffc534c5780f989d0a001edb7efd1f83ef0c75ea3974f0763a2f88e0c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2014-03-13T12:18:10Z",
    "title_canon_sha256": "15b491b1be447ec3933f116a6efc331758c39ea0f7d87d65e1dceeff0919fc35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3249",
    "kind": "arxiv",
    "version": 2
  }
}