Pith Number

pith:XYVUYQW4

pith:2010:XYVUYQW473B7AHQUS6IXKU3RLF

not attested not anchored not stored refs pending

Korovkin-type Theorems and Approximation by Positive Linear Operators

Francesco Altomare

arxiv:1009.2601 v1 · 2010-09-14 · math.CA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XYVUYQW473B7AHQUS6IXKU3RLF}

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	2026-05-18T04:40:56.731247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be2b4c42dcfec3f01e14979175537159616b8afd8d4922bea8bdf2ea655c623c

Aliases

arxiv: 1009.2601 · arxiv_version: 1009.2601v1 · doi: 10.48550/arxiv.1009.2601 · pith_short_12: XYVUYQW473B7 · pith_short_16: XYVUYQW473B7AHQU · pith_short_8: XYVUYQW4

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/XYVUYQW473B7AHQUS6IXKU3RLF \
  | 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: be2b4c42dcfec3f01e14979175537159616b8afd8d4922bea8bdf2ea655c623c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a0a664c28b3ad991edd730a886e835e4320f7843637bd1363e0953d5575ae461",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2010-09-14T09:37:55Z",
    "title_canon_sha256": "d1297b01aa6e61f315ce4f21d11d9e594fb98dd4b42d2af6d5134c0537657ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2601",
    "kind": "arxiv",
    "version": 1
  }
}