Pith Number

pith:L55ZXH4K

pith:2025:L55ZXH4KQEWHLKZ3CXVSQHC3EQ

not attested not anchored not stored refs pending

Generalizing Reduced Rank Extrapolation to Low-Rank Matrix Sequences

Jens Saak, Jonas Schulze, Jos Maubach, Nathan van de Wouw, Pascal den Boef, Patrick K\"urschner, Wil Schilders, Xiaobo Liu

arxiv:2502.09165 v4 · 2025-02-13 · 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{L55ZXH4KQEWHLKZ3CXVSQHC3EQ}

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	2026-05-22T01:04:53.358952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f7b9b9f8a812c75ab3b15eb281c5b24383b9d7ffa1c4dbcae949b0edc8e90e2

Aliases

arxiv: 2502.09165 · arxiv_version: 2502.09165v4 · doi: 10.48550/arxiv.2502.09165 · pith_short_12: L55ZXH4KQEWH · pith_short_16: L55ZXH4KQEWHLKZ3 · pith_short_8: L55ZXH4K

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/L55ZXH4KQEWHLKZ3CXVSQHC3EQ \
  | 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: 5f7b9b9f8a812c75ab3b15eb281c5b24383b9d7ffa1c4dbcae949b0edc8e90e2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c111748c95eefe68285b5967bc58b07b132b2c54a4b4e2efc1a64813a8294db8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-02-13T10:48:46Z",
    "title_canon_sha256": "992e807da36699d1225b4cba714600e7ab9433ec31e98ba3af2c47c7ee2f699b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2502.09165",
    "kind": "arxiv",
    "version": 4
  }
}