Pith Number

pith:XEKLFTCK

pith:2026:XEKLFTCKQUID5XIZOHUID5JFVX

not attested not anchored not stored refs pending

Reliable sampling-based RKHS norm estimation via superconvergence

Abdullah Tokmak, Christian Fiedler, Tizian Wenzel

arxiv:2605.20091 v1 · 2026-05-19 · math.NA · cs.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{XEKLFTCKQUID5XIZOHUID5JFVX}

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	2026-05-20T02:06:01.765432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b914b2cc4a85103edd1971e881f525adcb0890f9a23de04578776bdf7ab71b7f

Aliases

arxiv: 2605.20091 · arxiv_version: 2605.20091v1 · doi: 10.48550/arxiv.2605.20091 · pith_short_12: XEKLFTCKQUID · pith_short_16: XEKLFTCKQUID5XIZ · pith_short_8: XEKLFTCK

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/XEKLFTCKQUID5XIZOHUID5JFVX \
  | 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: b914b2cc4a85103edd1971e881f525adcb0890f9a23de04578776bdf7ab71b7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f298489f2df037513c57f3b37cc35410cb91ce88976740d627d3bdc63156fd45",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-05-19T16:47:47Z",
    "title_canon_sha256": "62cf692255ac157ee29fafd1210b67d762990c975f51bb3f43ee6e8b17bbd47f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.20091",
    "kind": "arxiv",
    "version": 1
  }
}