Pith Number

pith:PEXUACWY

pith:2019:PEXUACWY3FFSNNPJ6WYEW3EOTG

not attested not anchored not stored refs pending

Weighted weak group inverse for Hilbert space operators

Daochang Zhang, Dijana Mosic

arxiv:1903.00915 v1 · 2019-03-03 · math.FA · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PEXUACWY3FFSNNPJ6WYEW3EOTG}

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	2026-05-17T23:52:12.826647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

792f400ad8d94b26b5e9f5b04b6c8e99bb1b9363ba218cbb373c4a575c937792

Aliases

arxiv: 1903.00915 · arxiv_version: 1903.00915v1 · doi: 10.48550/arxiv.1903.00915 · pith_short_12: PEXUACWY3FFS · pith_short_16: PEXUACWY3FFSNNPJ · pith_short_8: PEXUACWY

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/PEXUACWY3FFSNNPJ6WYEW3EOTG \
  | 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: 792f400ad8d94b26b5e9f5b04b6c8e99bb1b9363ba218cbb373c4a575c937792

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "def164a750175f6c8d4771f905227f7d59e66f6a02abc78638ff7eff16182d4a",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-03-03T13:57:50Z",
    "title_canon_sha256": "6783f9b9a206106105f76599d55614c6b54b665ae53dcf67bdbbdcf34b694429"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.00915",
    "kind": "arxiv",
    "version": 1
  }
}