Pith Number

pith:SGW3IV2J

pith:2024:SGW3IV2J43HMSSSP3KZOIFP6BP

not attested not anchored not stored refs pending

Good and Fast Row-Sparse ah-Symmetric Reflexive Generalized Inverses

Gabriel Ponte, Jon Lee, Luze Xu, Marcia Fampa

arxiv:2401.17540 v3 · 2024-01-31 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SGW3IV2J43HMSSSP3KZOIFP6BP}

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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.

Cited by

1 paper in Pith

Sparse symmetric generalized inverses for sparse symmetric matrices

Receipt and verification

First computed	2026-07-05T11:33:13.380387Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91adb45749e6cec94a4fdab2e415fe0be929ca51a098563372ff4eb70fadc7eb

Aliases

arxiv: 2401.17540 · arxiv_version: 2401.17540v3 · doi: 10.48550/arxiv.2401.17540 · pith_short_12: SGW3IV2J43HM · pith_short_16: SGW3IV2J43HMSSSP · pith_short_8: SGW3IV2J

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/SGW3IV2J43HMSSSP3KZOIFP6BP \
  | 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: 91adb45749e6cec94a4fdab2e415fe0be929ca51a098563372ff4eb70fadc7eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3362af3ad6bb831c56729ecb63cf1e43c9c499f86e0bd4bc9cfb10c4428258e7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2024-01-31T01:52:08Z",
    "title_canon_sha256": "a99214841b3982968d80f7b4ebebac7cb5ed3501700c28d142077059d7ca6198"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.17540",
    "kind": "arxiv",
    "version": 3
  }
}