Pith Number

pith:L53DJTP6

pith:2020:L53DJTP6EG5OSQB6KXEVXN6JE7

not attested not anchored not stored refs pending

Reusing Preconditioners in Projection based Model Order Reduction Algorithms

Kapil Ahuja, Navneet Pratap Singh

arxiv:2003.12759 v1 · 2020-03-28 · 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{L53DJTP6EG5OSQB6KXEVXN6JE7}

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	2026-07-05T00:51:09.618066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f7634cdfe21bae9403e55c95bb7c927c9d99fa22fbce7485807bf47e6f57db8

Aliases

arxiv: 2003.12759 · arxiv_version: 2003.12759v1 · doi: 10.48550/arxiv.2003.12759 · pith_short_12: L53DJTP6EG5O · pith_short_16: L53DJTP6EG5OSQB6 · pith_short_8: L53DJTP6

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/L53DJTP6EG5OSQB6KXEVXN6JE7 \
  | 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: 5f7634cdfe21bae9403e55c95bb7c927c9d99fa22fbce7485807bf47e6f57db8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae47d5a91b82677ce6c5cc9035d1899c6bc3b6ffea939b442b4a90133402d12e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-03-28T09:58:51Z",
    "title_canon_sha256": "ecca0816f24c53021ebd116f1d9eb15d7ef642636479b65d039622b18a28823b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.12759",
    "kind": "arxiv",
    "version": 1
  }
}