Pith Number

pith:BVQIC5U4

pith:2014:BVQIC5U4NDJ454JDIHUJAZ4P7R

not attested not anchored not stored refs pending

Approximation of Eigenfunctions in Kernel-based Spaces

Gabriele Santin, Robert Schaback

arxiv:1411.7656 v2 · 2014-11-27 · 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{BVQIC5U4NDJ454JDIHUJAZ4P7R}

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	2026-05-18T00:03:59.621681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d6081769c68d3cef12341e890678ffc76f88f6f02385df71dbe6d080ab9e16b

Aliases

arxiv: 1411.7656 · arxiv_version: 1411.7656v2 · doi: 10.48550/arxiv.1411.7656 · pith_short_12: BVQIC5U4NDJ4 · pith_short_16: BVQIC5U4NDJ454JD · pith_short_8: BVQIC5U4

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/BVQIC5U4NDJ454JDIHUJAZ4P7R \
  | 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: 0d6081769c68d3cef12341e890678ffc76f88f6f02385df71dbe6d080ab9e16b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad5878c4c4fe85e912e8ae569d82c77217758aa7c3b9048c7c0e7e5c12ad1bba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2014-11-27T17:25:14Z",
    "title_canon_sha256": "3c86b41a7bc99f520496fa895ed8885b8d0dea38fa8a21a6c5c8d362c266e8e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7656",
    "kind": "arxiv",
    "version": 2
  }
}