Pith Number

pith:NK7Q4AK4

pith:2017:NK7Q4AK4SDQXXZRH2LTU2D6WWT

not attested not anchored not stored refs pending

Weighted Thresholding and Nonlinear Approximation

Emil Solsb{\ae}k Ottosen, Morten Nielsen

arxiv:1711.01862 v1 · 2017-11-06 · 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{NK7Q4AK4SDQXXZRH2LTU2D6WWT}

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	2026-05-18T00:31:16.685295Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6abf0e015c90e17be627d2e74d0fd6b4d925944d4528d7dd9bd7ea613c942a38

Aliases

arxiv: 1711.01862 · arxiv_version: 1711.01862v1 · doi: 10.48550/arxiv.1711.01862 · pith_short_12: NK7Q4AK4SDQX · pith_short_16: NK7Q4AK4SDQXXZRH · pith_short_8: NK7Q4AK4

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/NK7Q4AK4SDQXXZRH2LTU2D6WWT \
  | 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: 6abf0e015c90e17be627d2e74d0fd6b4d925944d4528d7dd9bd7ea613c942a38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2665d7604be8f1e3fd216280ef19ce819b8b9a90ed511cc588164f8b1ae4c6bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2017-11-06T12:40:49Z",
    "title_canon_sha256": "a688f19b9cd6d169eb86983eefd2927257b1e50bf7705d90d9d4effefabfa7c8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.01862",
    "kind": "arxiv",
    "version": 1
  }
}