Pith Number

pith:RISFRRAV

pith:2018:RISFRRAV4GYX75T73ZW7KEZUXK

not attested not anchored not stored refs pending

Sparse Isotropic Regularization for Spherical Harmonic Representations of Random Fields on the Sphere

Ian H. Sloan, Quoc T. Le Gia, Robert S. Womersley, Yu Guang Wang

arxiv:1801.03212 v1 · 2018-01-10 · math.NA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RISFRRAV4GYX75T73ZW7KEZUXK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:26:17.716394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8a2458c415e1b17ff67fde6df51334baa79ecac1f552d67dae6cb9ca55655850

Aliases

arxiv: 1801.03212 · arxiv_version: 1801.03212v1 · doi: 10.48550/arxiv.1801.03212 · pith_short_12: RISFRRAV4GYX · pith_short_16: RISFRRAV4GYX75T7 · pith_short_8: RISFRRAV

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/RISFRRAV4GYX75T73ZW7KEZUXK \
  | 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: 8a2458c415e1b17ff67fde6df51334baa79ecac1f552d67dae6cb9ca55655850

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fd838bf9199963c8c8164c07ab67751a13e429b5d3de4e256742e5d137df406",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-01-10T02:01:14Z",
    "title_canon_sha256": "a8ac3c2790c81aba42d6ac308907019d3b78f2ce05b411d443111283973ce808"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03212",
    "kind": "arxiv",
    "version": 1
  }
}