Pith Number

pith:QCWKWBOF

pith:2015:QCWKWBOFVP2ID2LBMXTFOAHLA4

not attested not anchored not stored refs pending

Sharp estimates of approximation of periodic functions in H\"older spaces

J\"urgen Prestin, Yurii Kolomoitsev

arxiv:1507.07522 v1 · 2015-07-27 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QCWKWBOFVP2ID2LBMXTFOAHLA4}

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	2026-05-18T01:36:16.234357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80acab05c5abf481e96165e65700eb072f2bcf663bd00beb12731067e73f4268

Aliases

arxiv: 1507.07522 · arxiv_version: 1507.07522v1 · doi: 10.48550/arxiv.1507.07522 · pith_short_12: QCWKWBOFVP2I · pith_short_16: QCWKWBOFVP2ID2LB · pith_short_8: QCWKWBOF

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/QCWKWBOFVP2ID2LBMXTFOAHLA4 \
  | 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: 80acab05c5abf481e96165e65700eb072f2bcf663bd00beb12731067e73f4268

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9541f7c29cffdd6593609bcb9ed3e80defc18c2a7a42c227aa32b7dea4e071f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2015-07-27T18:49:28Z",
    "title_canon_sha256": "0ef242a8251a03a602d730f7363a4965f533b6b89210e7709d3feec3d187d66f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07522",
    "kind": "arxiv",
    "version": 1
  }
}