Pith Number

pith:N7Q2N5QD

pith:2016:N7Q2N5QDZH4S5AMCXOPDIHZTTY

not attested not anchored not stored refs pending

Optimisation of the lowest Robin eigenvalue in the exterior of a compact set

David Krejcirik, Vladimir Lotoreichik

arxiv:1608.04896 v2 · 2016-08-17 · math.SP · math-ph · math.AP · math.MP · 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{N7Q2N5QDZH4S5AMCXOPDIHZTTY}

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	2026-05-18T00:00:09.508865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6fe1a6f603c9f92e8182bb9e341f339e19f8bdd3682becd1ce700c295ed38e06

Aliases

arxiv: 1608.04896 · arxiv_version: 1608.04896v2 · doi: 10.48550/arxiv.1608.04896 · pith_short_12: N7Q2N5QDZH4S · pith_short_16: N7Q2N5QDZH4S5AMC · pith_short_8: N7Q2N5QD

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/N7Q2N5QDZH4S5AMCXOPDIHZTTY \
  | 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: 6fe1a6f603c9f92e8182bb9e341f339e19f8bdd3682becd1ce700c295ed38e06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67fd0b9389897f652a4825c0b7275de12e3e44afadf7b51c1ce7fcaf2e4c6e25",
    "cross_cats_sorted": [
      "math-ph",
      "math.AP",
      "math.MP",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SP",
    "submitted_at": "2016-08-17T09:10:39Z",
    "title_canon_sha256": "d265693044b1c2ed2f7a1a8a886d7caa79c649c2f11db69f64e5b4b1f834b128"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.04896",
    "kind": "arxiv",
    "version": 2
  }
}