Pith Number

pith:F2ZIPJ2I

pith:2025:F2ZIPJ2IU2QKZZYJON7PKCJZZZ

not attested not anchored not stored refs pending

A hybrid Chebyshev-Tucker tensor format for approximation of multivariate functions

Bonan Sun, Boris N. Khoromskij, Peter Benner, Venera Khoromskaia

arxiv:2503.01696 v3 · 2025-03-03 · 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{F2ZIPJ2IU2QKZZYJON7PKCJZZZ}

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	2026-05-20T00:05:27.383717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2eb287a748a6a0ace709737ef50939ce5e4fc74b97121e9dce71dba1b5d7c799

Aliases

arxiv: 2503.01696 · arxiv_version: 2503.01696v3 · doi: 10.48550/arxiv.2503.01696 · pith_short_12: F2ZIPJ2IU2QK · pith_short_16: F2ZIPJ2IU2QKZZYJ · pith_short_8: F2ZIPJ2I

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/F2ZIPJ2IU2QKZZYJON7PKCJZZZ \
  | 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: 2eb287a748a6a0ace709737ef50939ce5e4fc74b97121e9dce71dba1b5d7c799

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a22caeece84512afdba189d266f1356b7681c11abe8969953a743f158ba0e8b",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-03-03T16:10:05Z",
    "title_canon_sha256": "5682e9d5c57a2c0ee61d749851a5332159fd6a5e0276ef559cde4a942bc9fffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.01696",
    "kind": "arxiv",
    "version": 3
  }
}