Pith Number

pith:FSD4FQEQ

pith:2015:FSD4FQEQ7JYNKBQVDJZ62TUUTB

not attested not anchored not stored refs pending

Sampling and reconstruction of operators

David F. Walnut, G\"otz E. Pfander

arxiv:1503.00628 v1 · 2015-03-02 · cs.IT · math.FA · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FSD4FQEQ7JYNKBQVDJZ62TUUTB}

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	2026-05-18T02:25:49.630742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c87c2c090fa70d506151a73ed4e949863a94b0b315628124b89509b495f3472

Aliases

arxiv: 1503.00628 · arxiv_version: 1503.00628v1 · doi: 10.48550/arxiv.1503.00628 · pith_short_12: FSD4FQEQ7JYN · pith_short_16: FSD4FQEQ7JYNKBQV · pith_short_8: FSD4FQEQ

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/FSD4FQEQ7JYNKBQVDJZ62TUUTB \
  | 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: 2c87c2c090fa70d506151a73ed4e949863a94b0b315628124b89509b495f3472

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b48a8b4a3bf8eca7b899a59c616964cb91865a8da10ae07754d7358d8f5abe9b",
    "cross_cats_sorted": [
      "math.FA",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-03-02T17:28:06Z",
    "title_canon_sha256": "ed87e3bf01a66ff196a3ec365df4d42f3491e1086ef8f30545c1e6100393512e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00628",
    "kind": "arxiv",
    "version": 1
  }
}