Pith Number

pith:WWFESP7B

pith:2013:WWFESP7B4QZ6TH4ZIWBMVVEAGU

not attested not anchored not stored refs pending

Matrix Inversion Is As Easy As Exponentiation

Nisheeth K. Vishnoi, Sushant Sachdeva

arxiv:1305.0526 v2 · 2013-05-02 · cs.DS · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWFESP7B4QZ6TH4ZIWBMVVEAGU}

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	2026-05-18T01:08:27.643665Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b58a493fe1e433e99f994582cad480351b30c10a14dd1e5decd32a2645fc6759

Aliases

arxiv: 1305.0526 · arxiv_version: 1305.0526v2 · doi: 10.48550/arxiv.1305.0526 · pith_short_12: WWFESP7B4QZ6 · pith_short_16: WWFESP7B4QZ6TH4Z · pith_short_8: WWFESP7B

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/WWFESP7B4QZ6TH4ZIWBMVVEAGU \
  | 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: b58a493fe1e433e99f994582cad480351b30c10a14dd1e5decd32a2645fc6759

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72a6afcf5007d9dfc7e95318ea8e189f3edd8e5e9a10ba51b8b25fbfda6bb9e8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-05-02T18:06:54Z",
    "title_canon_sha256": "12c52d9576aff6443627967198aca9ab9b91336a729c680fb37050902eaf1f43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0526",
    "kind": "arxiv",
    "version": 2
  }
}