Pith Number

pith:QM2JVPC7

pith:2016:QM2JVPC7AMWSF6KD7XMOKPQEKS

not attested not anchored not stored refs pending

Technical Note: Proximal Ordered Subsets Algorithms for TV Constrained Optimization in CT Image Reconstruction

Emil Y. Sidky, Martin S. Andersen, Sean Rose, Xiaochuan Pan

arxiv:1603.08889 v1 · 2016-03-29 · 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{QM2JVPC7AMWSF6KD7XMOKPQEKS}

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	2026-05-18T01:18:05.053409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83349abc5f032d22f943fdd8e53e0454825263d0591bdec1247b4ff1e07f53b1

Aliases

arxiv: 1603.08889 · arxiv_version: 1603.08889v1 · doi: 10.48550/arxiv.1603.08889 · pith_short_12: QM2JVPC7AMWS · pith_short_16: QM2JVPC7AMWSF6KD · pith_short_8: QM2JVPC7

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/QM2JVPC7AMWSF6KD7XMOKPQEKS \
  | 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: 83349abc5f032d22f943fdd8e53e0454825263d0591bdec1247b4ff1e07f53b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82e30d106975727d9b6068bd0b2bc381fdb4b04f76cde3deb693a820ed49f759",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2016-03-29T19:01:33Z",
    "title_canon_sha256": "3c25cb239fddac0b93627e6f152627a7fcb6fd0d0f6d083016d64c14423e21a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.08889",
    "kind": "arxiv",
    "version": 1
  }
}