Pith Number

pith:3M7PFWRA

pith:2008:3M7PFWRARO5JSWPCQLGK6JCNGJ

not attested not anchored not stored refs pending

Preconditioned HSS Method for Finite Element Approximations of Convection-Diffusion Equations

Alessandro Russo, Cristina Tablino Possio

arxiv:0807.3490 v1 · 2008-07-22 · 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{3M7PFWRARO5JSWPCQLGK6JCNGJ}

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	2026-06-03T22:06:08.248616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db3ef2da208bba9959e282ccaf244d3268cd9e917c3abf7ec65928b26f2e0673

Aliases

arxiv: 0807.3490 · arxiv_version: 0807.3490v1 · doi: 10.48550/arxiv.0807.3490 · pith_short_12: 3M7PFWRARO5J · pith_short_16: 3M7PFWRARO5JSWPC · pith_short_8: 3M7PFWRA

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/3M7PFWRARO5JSWPCQLGK6JCNGJ \
  | 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: db3ef2da208bba9959e282ccaf244d3268cd9e917c3abf7ec65928b26f2e0673

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75d13e2da5a05ca396bd346e2b15d84e834d4973bb3f9a8153c0c453505b6a5e",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-07-22T14:38:48Z",
    "title_canon_sha256": "d0b4ae7e05cfe371d07904134b083018e4e296c12b2723fffbe0eac24bcdc7f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3490",
    "kind": "arxiv",
    "version": 1
  }
}