Pith Number

pith:SNEPIB27

pith:2019:SNEPIB27KBXKLSEFJIGT3X6UVR

not attested not anchored not stored refs pending

Sparse polynomial approximation for optimal control problems constrained by elliptic PDEs with lognormal random coefficients

Omar Ghattas, Peng Chen

arxiv:1903.05547 v1 · 2019-03-13 · 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{SNEPIB27KBXKLSEFJIGT3X6UVR}

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	2026-05-17T23:51:20.660799Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9348f4075f506ea5c8854a0d3ddfd4ac6fc446c4bacf62b500ddc49be9df986b

Aliases

arxiv: 1903.05547 · arxiv_version: 1903.05547v1 · doi: 10.48550/arxiv.1903.05547 · pith_short_12: SNEPIB27KBXK · pith_short_16: SNEPIB27KBXKLSEF · pith_short_8: SNEPIB27

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/SNEPIB27KBXKLSEFJIGT3X6UVR \
  | 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: 9348f4075f506ea5c8854a0d3ddfd4ac6fc446c4bacf62b500ddc49be9df986b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32c73fddbd15dd494cf8a666e05d2378467e008fffe490d4fc651f3993bbead0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-13T15:33:49Z",
    "title_canon_sha256": "c257d15f87b95b9f2f38dfaefca68136dfc546b28588a9186621a178df084bfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05547",
    "kind": "arxiv",
    "version": 1
  }
}