Pith Number

pith:2SGPO53Z

pith:2017:2SGPO53Z3SWYXYN5OLNTPMEP7J

not attested not anchored not stored refs pending

A matrix characterization of boundary representations of positive matrices in the Hardy space

Eric S. Weber, John E. Herr, Palle E.T. Jorgensen

arxiv:1705.04198 v1 · 2017-05-09 · math.FA · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2SGPO53Z3SWYXYN5OLNTPMEP7J}

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	2026-05-18T00:44:39.510458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d48cf77779dcad8be1bd72db37b08ffa696441ebb1f087ebe88f07c82c753c1e

Aliases

arxiv: 1705.04198 · arxiv_version: 1705.04198v1 · doi: 10.48550/arxiv.1705.04198 · pith_short_12: 2SGPO53Z3SWY · pith_short_16: 2SGPO53Z3SWYXYN5 · pith_short_8: 2SGPO53Z

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/2SGPO53Z3SWYXYN5OLNTPMEP7J \
  | 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: d48cf77779dcad8be1bd72db37b08ffa696441ebb1f087ebe88f07c82c753c1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23382f1339e6abf12199171d2c2170a6abefea34ea269c387ad3de103e344a92",
    "cross_cats_sorted": [
      "math.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-05-09T21:46:22Z",
    "title_canon_sha256": "ce3db55f37506ba14bff31deb7e26c07640e3687fd76b1f04c5fade4ee009ffd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.04198",
    "kind": "arxiv",
    "version": 1
  }
}