Pith Number

pith:7AG3D2L5

pith:2026:7AG3D2L5WCUH2CRTZXYSPOAFCD

not attested not anchored not stored refs pending

Squared polynomial approximation kernels for the hypercube: improved error bounds and implications for Lasserre hierarchies

Etienne de Klerk, Juan C. Vera, Sander Gribling

arxiv:2605.31496 v1 · 2026-05-29 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7AG3D2L5WCUH2CRTZXYSPOAFCD}

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	2026-06-01T02:04:09.264673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f80db1e97db0a87d0a33cdf127b80510f3427c12bd785fca9cfb35934d14d507

Aliases

arxiv: 2605.31496 · arxiv_version: 2605.31496v1 · doi: 10.48550/arxiv.2605.31496 · pith_short_12: 7AG3D2L5WCUH · pith_short_16: 7AG3D2L5WCUH2CRT · pith_short_8: 7AG3D2L5

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/7AG3D2L5WCUH2CRTZXYSPOAFCD \
  | 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: f80db1e97db0a87d0a33cdf127b80510f3427c12bd785fca9cfb35934d14d507

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a32739a9c6f3fd73282607d748037ee59d2718e5dc7b3e85d38bdee21c3baca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2026-05-29T16:18:26Z",
    "title_canon_sha256": "6b8e131f28ebaad584ffa8e4a2845733ecf4f990f15c279d0e52a96be222a5d4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.31496",
    "kind": "arxiv",
    "version": 1
  }
}