Pith Number

pith:Z7TDJVGK

pith:2013:Z7TDJVGK5NDVXUI3U5PACBZXOK

not attested not anchored not stored refs pending

On a conjectured reverse Faber-Krahn inequality for a Steklov-type Laplacian eigenvalue

Carlo Nitsch, Cristina Trombetti, Vincenzo Ferone

arxiv:1307.3788 v2 · 2013-07-14 · math.OC · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z7TDJVGK5NDVXUI3U5PACBZXOK}

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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	2026-05-18T03:00:12.766896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfe634d4caeb475bd11ba75e010737729cfbb83dd186837ded2ed501fcf7e264

Aliases

arxiv: 1307.3788 · arxiv_version: 1307.3788v2 · doi: 10.48550/arxiv.1307.3788 · pith_short_12: Z7TDJVGK5NDV · pith_short_16: Z7TDJVGK5NDVXUI3 · pith_short_8: Z7TDJVGK

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/Z7TDJVGK5NDVXUI3U5PACBZXOK \
  | 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: cfe634d4caeb475bd11ba75e010737729cfbb83dd186837ded2ed501fcf7e264

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b69fecfb4691c85fb8b7d97776aeed3bb66ee077ff6ec265ffb965901f2b5e7e",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2013-07-14T22:40:51Z",
    "title_canon_sha256": "bd3371cae54d103d9f0afed66c945b419c1976ec9a4fe81eccbd98eef22214bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.3788",
    "kind": "arxiv",
    "version": 2
  }
}