Pith Number

pith:TJU5F7QL

pith:2023:TJU5F7QLQOBF6FYCIJQKHREYDK

not attested not anchored not stored refs pending

A higher order numerical method for singularly perturbed elliptic problems with characteristic boundary layers

Alan F. Hegarty, Eugene O'Riordan

arxiv:2311.00554 v2 · 2023-11-01 · 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{TJU5F7QLQOBF6FYCIJQKHREYDK}

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	2026-06-09T01:05:02.930136Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a69d2fe0b83825f17024260a3c4981a99e0e759683973e9ae27c8451dbc156c

Aliases

arxiv: 2311.00554 · arxiv_version: 2311.00554v2 · doi: 10.48550/arxiv.2311.00554 · pith_short_12: TJU5F7QLQOBF · pith_short_16: TJU5F7QLQOBF6FYC · pith_short_8: TJU5F7QL

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/TJU5F7QLQOBF6FYCIJQKHREYDK \
  | 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: 9a69d2fe0b83825f17024260a3c4981a99e0e759683973e9ae27c8451dbc156c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "733f0682c528bc2c63050b8dd8dff44c60bb8b387d99d9abfb0be8e29df997b4",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-11-01T14:42:01Z",
    "title_canon_sha256": "e1adb71742ff7307e337f3f3ae10bf657506044419d3255600f2ec7fab656c9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2311.00554",
    "kind": "arxiv",
    "version": 2
  }
}