Pith Number

pith:23KPMZFZ

pith:2012:23KPMZFZ2GCHWPT2LGEQSHZN7Q

not attested not anchored not stored refs pending

A localized orthogonal decomposition method for semi-linear elliptic problems

Axel Malqvist, Daniel Peterseim, Patrick Henning

arxiv:1211.3551 v2 · 2012-11-15 · 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{23KPMZFZ2GCHWPT2LGEQSHZN7Q}

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	2026-05-17T23:53:18.304185Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6d4f664b9d1847b3e7a5989091f2dfc39b140e0c5072dabfaa9026494eb3ff6

Aliases

arxiv: 1211.3551 · arxiv_version: 1211.3551v2 · doi: 10.48550/arxiv.1211.3551 · pith_short_12: 23KPMZFZ2GCH · pith_short_16: 23KPMZFZ2GCHWPT2 · pith_short_8: 23KPMZFZ

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/23KPMZFZ2GCHWPT2LGEQSHZN7Q \
  | 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: d6d4f664b9d1847b3e7a5989091f2dfc39b140e0c5072dabfaa9026494eb3ff6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b06fd5eff1358d8a65a11a9a49ce640057454efa2ccbc93602b1dd8231f912a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-15T09:56:18Z",
    "title_canon_sha256": "c675bfb3f243c73136fdab94ef1adbcfd883d92416cf45648f1da4bd69636433"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.3551",
    "kind": "arxiv",
    "version": 2
  }
}