Pith Number

pith:PDCTDV52

pith:2014:PDCTDV52BUVXVC645ACDAI2RB4

not attested not anchored not stored refs pending

Improvements on the infinity norm bound for the inverse of Nekrasov matrices

Aning Gao, Chaoqian Li, Hui Pei, Yaotang Li

arxiv:1408.5180 v1 · 2014-08-22 · math.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{PDCTDV52BUVXVC645ACDAI2RB4}

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	2026-05-18T02:44:39.279959Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78c531d7ba0d2b7a8bdce8043023510f077250ee564023e81826342d441093f4

Aliases

arxiv: 1408.5180 · arxiv_version: 1408.5180v1 · doi: 10.48550/arxiv.1408.5180 · pith_short_12: PDCTDV52BUVX · pith_short_16: PDCTDV52BUVXVC64 · pith_short_8: PDCTDV52

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/PDCTDV52BUVXVC645ACDAI2RB4 \
  | 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: 78c531d7ba0d2b7a8bdce8043023510f077250ee564023e81826342d441093f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afaa808c70d09800e9775b74c9ec6f9d9b3f9b700b7fe9539923aef1793757ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-08-22T00:49:40Z",
    "title_canon_sha256": "3663d05174ba29baf0f77a072bac13bac251e1ec3991e36142076bce3e0536b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.5180",
    "kind": "arxiv",
    "version": 1
  }
}