Pith Number

pith:EE4TE3YF

pith:2015:EE4TE3YFPO7OTB4TDB26JCY7LJ

not attested not anchored not stored refs pending

Fast Multi-class Dictionaries Learning with Geometrical Directions in MRI Reconstruction

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

arxiv:1503.02945 v2 · 2015-03-10 · cs.CV · math.OC · 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{EE4TE3YFPO7OTB4TDB26JCY7LJ}

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	2026-05-18T01:22:01.777661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2139326f057bbee987931875e48b1f5a4ed5499e2f6a1962ae4e88acad8c8872

Aliases

arxiv: 1503.02945 · arxiv_version: 1503.02945v2 · doi: 10.48550/arxiv.1503.02945 · pith_short_12: EE4TE3YFPO7O · pith_short_16: EE4TE3YFPO7OTB4T · pith_short_8: EE4TE3YF

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/EE4TE3YFPO7OTB4TDB26JCY7LJ \
  | 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: 2139326f057bbee987931875e48b1f5a4ed5499e2f6a1962ae4e88acad8c8872

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7f975f34b88d24756a809acff069c84a4607db511f5e1b890205249c9f51f453",
    "cross_cats_sorted": [
      "math.OC",
      "physics.med-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-03-10T15:08:21Z",
    "title_canon_sha256": "57612f57133df517ea9d37a91f5366fd42dffd4fb646b55dab15398c0126e2a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02945",
    "kind": "arxiv",
    "version": 2
  }
}