Pith Number

pith:JYNBYZ5P

pith:2012:JYNBYZ5PFIU3KKLWUK2DKFAM6F

not attested not anchored not stored refs pending

Optimal Preconditioners for Finite Element Approximations of Convection-Diffusion Equations on structured meshes

Alessandro Russo, Cristina Tablino Possio, Stefano Serra Capizzano

arxiv:1209.2259 v1 · 2012-09-11 · 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{JYNBYZ5PFIU3KKLWUK2DKFAM6F}

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	2026-05-18T03:45:52.396308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4e1a1c67af2a29b52976a2b435140cf166787f7893bd278c7aa0a4138ee66a61

Aliases

arxiv: 1209.2259 · arxiv_version: 1209.2259v1 · doi: 10.48550/arxiv.1209.2259 · pith_short_12: JYNBYZ5PFIU3 · pith_short_16: JYNBYZ5PFIU3KKLW · pith_short_8: JYNBYZ5P

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/JYNBYZ5PFIU3KKLWUK2DKFAM6F \
  | 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: 4e1a1c67af2a29b52976a2b435140cf166787f7893bd278c7aa0a4138ee66a61

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67e89a308fa1e9949638982b5ede03a16d41a84ea3cdea690ebc07cf1f9066df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-09-11T08:59:51Z",
    "title_canon_sha256": "6c5898179ce048ba93c60f046b1175c374ad443115549f391732e8501b99c457"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2259",
    "kind": "arxiv",
    "version": 1
  }
}