Pith Number

pith:XVE7BD4I

pith:2018:XVE7BD4I7EKZCLWDVNY6G5FYUG

not attested not anchored not stored refs pending

Parameter-uniform numerical methods for singularly perturbed parabolic problems with incompatible boundary-initial data

Eugene O'Riordan, Jose Luis Gracia

arxiv:1806.10398 v2 · 2018-06-27 · 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{XVE7BD4I7EKZCLWDVNY6G5FYUG}

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	2026-05-18T00:00:35.051280Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd49f08f88f915912ec3ab71e374b8a18de1a397597202f48ce603f3f4d50d93

Aliases

arxiv: 1806.10398 · arxiv_version: 1806.10398v2 · doi: 10.48550/arxiv.1806.10398 · pith_short_12: XVE7BD4I7EKZ · pith_short_16: XVE7BD4I7EKZCLWD · pith_short_8: XVE7BD4I

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/XVE7BD4I7EKZCLWDVNY6G5FYUG \
  | 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: bd49f08f88f915912ec3ab71e374b8a18de1a397597202f48ce603f3f4d50d93

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53fabb1e55fa39ae75b1e36d87351bcf2d0df516aaf68933b5bf7e51eb6a4203",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-06-27T10:39:37Z",
    "title_canon_sha256": "7e4209c5564c54d61538c7db98164744002aa5f2e927b0ba9bb87cf9f1fcec2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.10398",
    "kind": "arxiv",
    "version": 2
  }
}