Pith Number

pith:SIBTF3O4

pith:2019:SIBTF3O4LBC2WBD65IS45LVC32

not attested not anchored not stored refs pending

Low-rank updates and divide-and-conquer methods for quadratic matrix equations

Daniel Kressner, Patrick K\"urschner, Stefano Massei

arxiv:1903.02343 v1 · 2019-03-06 · math.NA · 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{SIBTF3O4LBC2WBD65IS45LVC32}

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	2026-05-17T23:51:55.559606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

920332eddc5845ab047eea25ceaea2dea043b4c3a88de2f53021c86859abb20b

Aliases

arxiv: 1903.02343 · arxiv_version: 1903.02343v1 · doi: 10.48550/arxiv.1903.02343 · pith_short_12: SIBTF3O4LBC2 · pith_short_16: SIBTF3O4LBC2WBD6 · pith_short_8: SIBTF3O4

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/SIBTF3O4LBC2WBD65IS45LVC32 \
  | 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: 920332eddc5845ab047eea25ceaea2dea043b4c3a88de2f53021c86859abb20b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b958e3d1452e591e1d94eb6dc817c170381c37a651d2fbde5c3189fc55c1d074",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-06T12:48:06Z",
    "title_canon_sha256": "ce99bf56c2332449a1f7e83b9fc3aeaf91a17b5dd6f221b161c73b32113b489b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02343",
    "kind": "arxiv",
    "version": 1
  }
}