Pith Number

pith:3YQDPFGR

pith:2017:3YQDPFGRS6Z7L5R72KOIEFIDUF

not attested not anchored not stored refs pending

An automatic regularization method: An application for 3D X-ray micro-CT reconstruction using sparse data

Heikki Kr\"oger, Juho Rimpel\"ainen, Juuso Ketola, Miika T. Nieminen, Sakari S. Karhula, Samuli Siltanen, Simo Saarakkala, Zenith Purisha

arxiv:1708.02067 v2 · 2017-08-04 · physics.med-ph · math.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{3YQDPFGRS6Z7L5R72KOIEFIDUF}

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	2026-05-18T00:19:08.824042Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de203794d197b3f5f63fd29c821503a15c6beaeea7601a3031603b84a1a9fea1

Aliases

arxiv: 1708.02067 · arxiv_version: 1708.02067v2 · doi: 10.48550/arxiv.1708.02067 · pith_short_12: 3YQDPFGRS6Z7 · pith_short_16: 3YQDPFGRS6Z7L5R7 · pith_short_8: 3YQDPFGR

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/3YQDPFGRS6Z7L5R72KOIEFIDUF \
  | 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: de203794d197b3f5f63fd29c821503a15c6beaeea7601a3031603b84a1a9fea1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f9f1b257e3eb1ac310896fae372e9a78b8c7fe728628087ff8dd633bfe64d287",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2017-08-04T15:31:05Z",
    "title_canon_sha256": "aa8194183e158754fa89a2128a084f6cff8976f0ce9986e3a54fba13dd331105"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.02067",
    "kind": "arxiv",
    "version": 2
  }
}