Pith Number

pith:S7NXNI4H

pith:2017:S7NXNI4HVDI5RCJNTZ4KI445N3

not attested not anchored not stored refs pending

Nehari's theorem for convex domain Hankel and Toeplitz operators in several variables

Karl-Mikael Perfekt, Marcus Carlsson

arxiv:1709.01843 v3 · 2017-09-06 · math.FA · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S7NXNI4HVDI5RCJNTZ4KI445N3}

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	2026-05-18T00:33:27.355258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97db76a387a8d1d8892d9e78a4739d6ee1804f33ee116bb4f6e3c0164345944d

Aliases

arxiv: 1709.01843 · arxiv_version: 1709.01843v3 · doi: 10.48550/arxiv.1709.01843 · pith_short_12: S7NXNI4HVDI5 · pith_short_16: S7NXNI4HVDI5RCJN · pith_short_8: S7NXNI4H

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/S7NXNI4HVDI5RCJNTZ4KI445N3 \
  | 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: 97db76a387a8d1d8892d9e78a4739d6ee1804f33ee116bb4f6e3c0164345944d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88936b315d5abaac747452c531ce31bb5e4f47afc8bcf63031d5f8b27d78154e",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-09-06T14:44:42Z",
    "title_canon_sha256": "4e5b4af87224ffdcec7114652fb1d71f7198de20fbeb6ebc312076026342e111"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01843",
    "kind": "arxiv",
    "version": 3
  }
}