Pith Number

pith:QULNKWLC

pith:2013:QULNKWLCIQKC6EJ5XTLSEUN6QE

not attested not anchored not stored refs pending

Strongly elliptic pseudodifferential equations on the sphere with radial basis functions

T. D. Pham, T. Tran

arxiv:1311.6580 v1 · 2013-11-26 · 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{QULNKWLCIQKC6EJ5XTLSEUN6QE}

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	2026-05-18T03:06:12.322452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8516d5596244142f113dbcd72251be813c4ff231348c817977104044eb2cd639

Aliases

arxiv: 1311.6580 · arxiv_version: 1311.6580v1 · doi: 10.48550/arxiv.1311.6580 · pith_short_12: QULNKWLCIQKC · pith_short_16: QULNKWLCIQKC6EJ5 · pith_short_8: QULNKWLC

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/QULNKWLCIQKC6EJ5XTLSEUN6QE \
  | 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: 8516d5596244142f113dbcd72251be813c4ff231348c817977104044eb2cd639

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef4476806d78b2f45e7f8d66913c96866e2fde0ffa522e6921984724e427225e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2013-11-26T08:01:45Z",
    "title_canon_sha256": "a03775312bca0d7a807e6fe5285784f804be49fb5cf45153db050b3b11d92a53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6580",
    "kind": "arxiv",
    "version": 1
  }
}