Pith Number

pith:BQ55GRW2

pith:2011:BQ55GRW2DTAH5WCBKJOKSXPTYQ

not attested not anchored not stored refs pending

Restricted non-linear approximation in sequence spaces and applications to wavelet bases and interpolation

Daniel Vera, Eugenio Hern\'andez

arxiv:1108.2610 v1 · 2011-08-12 · 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{BQ55GRW2DTAH5WCBKJOKSXPTYQ}

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	2026-05-18T04:15:36.496791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c3bd346da1cc07ed841525ca95df3c41e61b421e1a0d15241198541274b228b

Aliases

arxiv: 1108.2610 · arxiv_version: 1108.2610v1 · doi: 10.48550/arxiv.1108.2610 · pith_short_12: BQ55GRW2DTAH · pith_short_16: BQ55GRW2DTAH5WCB · pith_short_8: BQ55GRW2

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/BQ55GRW2DTAH5WCBKJOKSXPTYQ \
  | 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: 0c3bd346da1cc07ed841525ca95df3c41e61b421e1a0d15241198541274b228b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4628770c6582473640fd63efbadc3460a384af775475586b498c52748787a51d",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2011-08-12T12:15:04Z",
    "title_canon_sha256": "e73b82558c16ce78a619c5e5d47420c15bdd8851834000c947ab698e0cfcb5d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2610",
    "kind": "arxiv",
    "version": 1
  }
}