Pith Number

pith:PBYABKDZ

pith:2018:PBYABKDZFWUQE53NBZKIXWUYUU

not attested not anchored not stored refs pending

On the existence of group inverses of Peirce corner matrices

Daochang Zhang, Dijana Mosic, Tin-Yau Tam

arxiv:1811.06555 v1 · 2018-11-15 · 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{PBYABKDZFWUQE53NBZKIXWUYUU}

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	2026-05-18T00:00:34.520108Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

787000a8792da902776d0e548bda98a53f9a4a4c525757783961a7b1e7f5bc1b

Aliases

arxiv: 1811.06555 · arxiv_version: 1811.06555v1 · doi: 10.48550/arxiv.1811.06555 · pith_short_12: PBYABKDZFWUQ · pith_short_16: PBYABKDZFWUQE53N · pith_short_8: PBYABKDZ

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/PBYABKDZFWUQE53NBZKIXWUYUU \
  | 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: 787000a8792da902776d0e548bda98a53f9a4a4c525757783961a7b1e7f5bc1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d45e4adb796c91dd2cf9cc4ddbd45d9aa07e7e2063079f356a49c168091eb14f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2018-11-15T19:00:21Z",
    "title_canon_sha256": "1a18525bada2565368773f3571bee09f4047fe73a6aef0eb4adc7234732ec4a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.06555",
    "kind": "arxiv",
    "version": 1
  }
}