Pith Number

pith:L4ZNHIA4

pith:2014:L4ZNHIA4WNIX6WYDOZYRUNJ6OO

not attested not anchored not stored refs pending

Spectral Nevanlinna-Pick problem and weak extremals in the symmetrized bidisc

Lukasz Kosinski

arxiv:1404.1067 v2 · 2014-04-03 · math.CV · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{L4ZNHIA4WNIX6WYDOZYRUNJ6OO}

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	2026-05-18T02:54:39.086411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f32d3a01cb3517f5b0376711a353e739609ebc7a24c26d3c0dd0c27d3e036a5

Aliases

arxiv: 1404.1067 · arxiv_version: 1404.1067v2 · doi: 10.48550/arxiv.1404.1067 · pith_short_12: L4ZNHIA4WNIX · pith_short_16: L4ZNHIA4WNIX6WYD · pith_short_8: L4ZNHIA4

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/L4ZNHIA4WNIX6WYDOZYRUNJ6OO \
  | 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: 5f32d3a01cb3517f5b0376711a353e739609ebc7a24c26d3c0dd0c27d3e036a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7856dd66af39ac2cba72a63ccb88ebad043adb774064e7d4b50acbef195e99a5",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2014-04-03T19:50:01Z",
    "title_canon_sha256": "1feb0dd815aa586f2dceb4022517ab3b9f4b4acc7796006c5858218874c96099"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1067",
    "kind": "arxiv",
    "version": 2
  }
}