Pith Number

pith:VQUMUYU6

pith:2021:VQUMUYU6WZBXX4DV3MIXWJES7X

not attested not anchored not stored refs pending

On Regularization via Frame Decompositions with Applications in Tomography

Lukas Weissinger, Ronny Ramlau, Simon Hubmer

arxiv:2108.02465 v4 · 2021-08-05 · math.NA · 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{VQUMUYU6WZBXX4DV3MIXWJES7X}

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	2026-07-05T05:12:48.918151Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac28ca629eb6437bf075db117b2492fdc9d7396dd916765f185760c17632c687

Aliases

arxiv: 2108.02465 · arxiv_version: 2108.02465v4 · doi: 10.48550/arxiv.2108.02465 · pith_short_12: VQUMUYU6WZBX · pith_short_16: VQUMUYU6WZBXX4DV · pith_short_8: VQUMUYU6

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/VQUMUYU6WZBXX4DV3MIXWJES7X \
  | 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: ac28ca629eb6437bf075db117b2492fdc9d7396dd916765f185760c17632c687

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe6284e822cd67c11f1ddca96afb528816ba86d0cfbade67bb48e77361aaff13",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2021-08-05T09:10:42Z",
    "title_canon_sha256": "42c848e54d2a18c2b75d5f41dfff4db920df3a9f6e8e8d1ba0255f175b4e02d2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.02465",
    "kind": "arxiv",
    "version": 4
  }
}