Pith Number

pith:VNM7Y54T

pith:2015:VNM7Y54TVMA4YO4XL6SEMI7QLT

not attested not anchored not stored refs pending

Interpolation of inverse operators for preconditioning parameter-dependent equations

Anthony Nouy, Olivier Zahm

arxiv:1504.07903 v4 · 2015-04-29 · 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{VNM7Y54TVMA4YO4XL6SEMI7QLT}

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	2026-05-18T01:01:29.269906Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab59fc7793ab01cc3b975fa44623f05cc1d9e89edb9137be42d855338c929b93

Aliases

arxiv: 1504.07903 · arxiv_version: 1504.07903v4 · doi: 10.48550/arxiv.1504.07903 · pith_short_12: VNM7Y54TVMA4 · pith_short_16: VNM7Y54TVMA4YO4X · pith_short_8: VNM7Y54T

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/VNM7Y54TVMA4YO4XL6SEMI7QLT \
  | 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: ab59fc7793ab01cc3b975fa44623f05cc1d9e89edb9137be42d855338c929b93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "143271a04e60a3055971312b7da88ba2c87cbf5da6234fbf734bd59493977aa0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-04-29T15:55:35Z",
    "title_canon_sha256": "18769cc65eccc48fddb4b87e9d6cd2fcf908a19eb3d87242ae0a8a74c9b1b7d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07903",
    "kind": "arxiv",
    "version": 4
  }
}