Pith Number

pith:VV2WINGL

pith:2017:VV2WINGLICFANDKMLWY4IB3SJZ

not attested not anchored not stored refs pending

Drazin inverses of the sum of four matrices and its applications

Daochang Zhang, Dijana Mosi\' c, Li Guo

arxiv:1707.00055 v1 · 2017-06-30 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VV2WINGLICFANDKMLWY4IB3SJZ}

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	2026-05-18T00:41:08.709777Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad756434cb408a068d4c5db1c407724e551d32736600d980ba9555832f921446

Aliases

arxiv: 1707.00055 · arxiv_version: 1707.00055v1 · doi: 10.48550/arxiv.1707.00055 · pith_short_12: VV2WINGLICFA · pith_short_16: VV2WINGLICFANDKM · pith_short_8: VV2WINGL

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/VV2WINGLICFANDKMLWY4IB3SJZ \
  | 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: ad756434cb408a068d4c5db1c407724e551d32736600d980ba9555832f921446

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e631dcee88839cc269d782a37bc5cc1f2ccf322d458c7f506134bb8d80a7d15b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2017-06-30T22:03:27Z",
    "title_canon_sha256": "b35243239623c73d47ab96948f69c56d534da42f9885ae61a29c78d35cfffcf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00055",
    "kind": "arxiv",
    "version": 1
  }
}