Pith Number

pith:JPYLNS4O

pith:2015:JPYLNS4OG2OVHCSUQU4R7VINKJ

not attested not anchored not stored refs pending

Infinite-dimensional $\ell^1$ minimization and function approximation from pointwise data

Ben Adcock

arxiv:1503.02352 v4 · 2015-03-09 · math.NA · 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{JPYLNS4OG2OVHCSUQU4R7VINKJ}

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	2026-05-18T00:54:58.284482Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bf0b6cb8e369d538a5485391fd50d52756dbec8662afa16065f88d660834297

Aliases

arxiv: 1503.02352 · arxiv_version: 1503.02352v4 · doi: 10.48550/arxiv.1503.02352 · pith_short_12: JPYLNS4OG2OV · pith_short_16: JPYLNS4OG2OVHCSU · pith_short_8: JPYLNS4O

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/JPYLNS4OG2OVHCSUQU4R7VINKJ \
  | 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: 4bf0b6cb8e369d538a5485391fd50d52756dbec8662afa16065f88d660834297

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d90a45c0f5677f1200fcfb2f4de7901dcce062b97e3836286d9dbea93c77e58",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-03-09T01:10:29Z",
    "title_canon_sha256": "9e5e9efd300c02240c762c2db29eeae556371afdf68ae4894042da795956bd51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02352",
    "kind": "arxiv",
    "version": 4
  }
}