Pith Number

pith:YTF5B4XD

pith:2019:YTF5B4XDWBYPEBSJAD4KKUOGR2

not attested not anchored not stored refs pending

Exact and fast inversion of the approximate discrete Radon transform from partial data

Donsub Rim

arxiv:1908.00887 v3 · 2019-08-02 · math.NA · cs.CC · cs.CV · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YTF5B4XDWBYPEBSJAD4KKUOGR2}

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	2026-07-05T01:03:19.837539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4cbd0f2e3b070f2064900f8a551c68ea2121437798985e52bcfbab75ea40651

Aliases

arxiv: 1908.00887 · arxiv_version: 1908.00887v3 · doi: 10.48550/arxiv.1908.00887 · pith_short_12: YTF5B4XDWBYP · pith_short_16: YTF5B4XDWBYPEBSJ · pith_short_8: YTF5B4XD

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/YTF5B4XDWBYPEBSJAD4KKUOGR2 \
  | 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: c4cbd0f2e3b070f2064900f8a551c68ea2121437798985e52bcfbab75ea40651

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f06ba845eacc421b24b5201e0d2cb52d480f21f3bb0a5406ba9f5b4d52a3da0",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.CV",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-02T14:41:35Z",
    "title_canon_sha256": "392258ff09aa6372371b908a44bee5559cb7054ffee653da96f734418d7a326c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00887",
    "kind": "arxiv",
    "version": 3
  }
}