Pith Number

pith:CA7PTU72

pith:2026:CA7PTU72NWNV2UXTAB5L57BUI2

not attested not anchored not stored refs pending

On Symmetric Kernel Collocation for Nonlinear PDEs

Bernard Haasdonk, Milan Bacchetta, Tobias Ehring

arxiv:2607.06276 v1 · 2026-07-07 · 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{CA7PTU72NWNV2UXTAB5L57BUI2}

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	2026-07-08T01:19:19.787736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

103ef9d3fa6d9b5d52f3007abefc3446a0f79ea3a9ec1f35c566d8938467dc1b

Aliases

arxiv: 2607.06276 · arxiv_version: 2607.06276v1 · doi: 10.48550/arxiv.2607.06276 · pith_short_12: CA7PTU72NWNV · pith_short_16: CA7PTU72NWNV2UXT · pith_short_8: CA7PTU72

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/CA7PTU72NWNV2UXTAB5L57BUI2 \
  | 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: 103ef9d3fa6d9b5d52f3007abefc3446a0f79ea3a9ec1f35c566d8938467dc1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3bb1897df88fc83f50faae5759c75c874e59cc5a06cbf5594b552cb710f881de",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-07-07T13:42:27Z",
    "title_canon_sha256": "a3c5a1516df48ac36e0a5fe93942398f27ca7d105a2fed28e6386b47198cf21c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.06276",
    "kind": "arxiv",
    "version": 1
  }
}