Pith Number

pith:ECEV4RVK

pith:2009:ECEV4RVKXW6EMEZI2IFRONAMR4

not attested not anchored not stored refs pending

An asymptotic preserving scheme for strongly anisotropic elliptic problems

Claudia Negulescu (LATP), Fabrice Deluzet (IMT), Pierre Degond (IMT)

arxiv:0903.4984 v2 · 2009-03-28 · 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{ECEV4RVKXW6EMEZI2IFRONAMR4}

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	2026-05-18T02:54:47.631632Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20895e46aabdbc461328d20b17340c8f2105774a76280ca68bd609da52f7ec7c

Aliases

arxiv: 0903.4984 · arxiv_version: 0903.4984v2 · doi: 10.48550/arxiv.0903.4984 · pith_short_12: ECEV4RVKXW6E · pith_short_16: ECEV4RVKXW6EMEZI · pith_short_8: ECEV4RVK

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/ECEV4RVKXW6EMEZI2IFRONAMR4 \
  | 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: 20895e46aabdbc461328d20b17340c8f2105774a76280ca68bd609da52f7ec7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfdca50276a9465147483fe339a4cb229547b278828151f5200bd3b7ab8f9f29",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-03-28T18:02:48Z",
    "title_canon_sha256": "8821b3824769799268026acff20f31019b3dc060649bc585eea79517a1e09738"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.4984",
    "kind": "arxiv",
    "version": 2
  }
}