Pith Number

pith:OBVDTDGN

pith:2011:OBVDTDGNZLMKQZIXY6II4E45UP

not attested not anchored not stored refs pending

Quantifying admissible undersampling for sparsity-exploiting iterative image reconstruction in X-ray CT

Emil Y. Sidky, Jakob H. J{\o}rgensen, Xiaochuan Pan

arxiv:1109.0629 v3 · 2011-09-03 · physics.med-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OBVDTDGNZLMKQZIXY6II4E45UP}

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	2026-05-18T03:48:34.141563Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

706a398ccdcad8a86517c7908e139da3cda0442d6bcbf5a692f6193a62f06ddf

Aliases

arxiv: 1109.0629 · arxiv_version: 1109.0629v3 · doi: 10.48550/arxiv.1109.0629 · pith_short_12: OBVDTDGNZLMK · pith_short_16: OBVDTDGNZLMKQZIX · pith_short_8: OBVDTDGN

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/OBVDTDGNZLMKQZIXY6II4E45UP \
  | 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: 706a398ccdcad8a86517c7908e139da3cda0442d6bcbf5a692f6193a62f06ddf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e4fadc7a5890d179a468573afb72a7805b13f80b8797b027242246889214a4dd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2011-09-03T15:31:36Z",
    "title_canon_sha256": "bf49805e55300c63add4027ca2755dae737eb8616fa3ebc8f9c0d3a236af8603"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.0629",
    "kind": "arxiv",
    "version": 3
  }
}