Pith Number

pith:6547XOZC

pith:2014:6547XOZCEUIJVEZOYE53W34TGX

not attested not anchored not stored refs pending

An Efficient Approach for Computing Optimal Low-Rank Regularized Inverse Matrices

Julianne Chung, Matthias Chung

arxiv:1404.1610 v1 · 2014-04-06 · 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{6547XOZCEUIJVEZOYE53W34TGX}

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	2026-05-18T01:43:37.182094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f779fbbb2225109a932ec13bbb6f9335c15578ca866b9e69d140f80d34d83818

Aliases

arxiv: 1404.1610 · arxiv_version: 1404.1610v1 · doi: 10.48550/arxiv.1404.1610 · pith_short_12: 6547XOZCEUIJ · pith_short_16: 6547XOZCEUIJVEZO · pith_short_8: 6547XOZC

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/6547XOZCEUIJVEZOYE53W34TGX \
  | 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: f779fbbb2225109a932ec13bbb6f9335c15578ca866b9e69d140f80d34d83818

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "11ef88a367aa17d4c0ca34a8b0619b1d544540db19a19a4f0622dc311cacaead",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-04-06T19:06:37Z",
    "title_canon_sha256": "b966a14bac5742ce2a61bfcd8ef51c7259ca0138322755f0ddcda7677e0eecc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.1610",
    "kind": "arxiv",
    "version": 1
  }
}