Pith Number

pith:DGEYXKBB

pith:2025:DGEYXKBBVBQTWBSOQNMPBXF7M5

not attested not anchored not stored refs pending

Fast PET Reconstruction with Variance Reduction and Prior-Aware Preconditioning

Georg Schramm, Matthias J. Ehrhardt, Zeljko Kereta

arxiv:2506.04976 v1 · 2025-06-05 · physics.med-ph · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DGEYXKBBVBQTWBSOQNMPBXF7M5}

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.

Cited by

1 paper in Pith

Weighted Directional Total Nuclear Variation for Joint Yttrium-90 PET/SPECT Reconstruction with CTAC-derived Guidance

Receipt and verification

First computed	2026-07-05T11:16:40.060727Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19898ba821a8613b064e8358f0dcbf676bc78bcfdee7d2efc0df0d104c239906

Aliases

arxiv: 2506.04976 · arxiv_version: 2506.04976v1 · doi: 10.48550/arxiv.2506.04976 · pith_short_12: DGEYXKBBVBQT · pith_short_16: DGEYXKBBVBQTWBSO · pith_short_8: DGEYXKBB

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/DGEYXKBBVBQTWBSOQNMPBXF7M5 \
  | 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: 19898ba821a8613b064e8358f0dcbf676bc78bcfdee7d2efc0df0d104c239906

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d75669e0e837f1d1346db6fa30b42544d590920efae1689720cf94178ba85d09",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2025-06-05T12:47:47Z",
    "title_canon_sha256": "c420eca70ae2b78f2158e38e6fea49824807d8835607b108ca5259420f0ce300"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.04976",
    "kind": "arxiv",
    "version": 1
  }
}