Pith Number

pith:P7KI7F46

pith:2015:P7KI7F463VF4JL2VZGPK3UU62F

not attested not anchored not stored refs pending

Projected Iterative Soft-thresholding Algorithm for Tight Frames in Compressed Sensing Magnetic Resonance Imaging

Di Guo, Jian-Feng Cai, Xiaobo Qu, Yunsong Liu, Zhifang Zhan, Zhong Chen

arxiv:1504.07786 v2 · 2015-04-29 · physics.med-ph · cs.CV · 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{P7KI7F463VF4JL2VZGPK3UU62F}

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	2026-05-18T01:22:01.628206Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7fd48f979edd4bc4af55c99eadd29ed167a789ac6a4f98a8afed552e6afb0ff2

Aliases

arxiv: 1504.07786 · arxiv_version: 1504.07786v2 · doi: 10.48550/arxiv.1504.07786 · pith_short_12: P7KI7F463VF4 · pith_short_16: P7KI7F463VF4JL2V · pith_short_8: P7KI7F46

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/P7KI7F463VF4JL2VZGPK3UU62F \
  | 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: 7fd48f979edd4bc4af55c99eadd29ed167a789ac6a4f98a8afed552e6afb0ff2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa821245b748038bf8971967f0e093162230db9c9611a46a319caeb11a87c524",
    "cross_cats_sorted": [
      "cs.CV",
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-04-29T09:35:31Z",
    "title_canon_sha256": "810384edbc6f9d065860fa0d36e2b7acab6fa69b1a3de86424337be9fda4f941"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07786",
    "kind": "arxiv",
    "version": 2
  }
}