Pith Number

pith:JC63JN26

pith:2023:JC63JN26SE7YPE6DXSA4RF5PNG

not attested not anchored not stored refs pending

DULDA: Dual-domain Unsupervised Learned Descent Algorithm for PET image reconstruction

Huafeng Liu, Kyungsang Kim, Marcio Aloisio Bezerra Cavalcanti Rockenbach, Quanzheng Li, Rui Hu, Yunmei Chen

arxiv:2303.04661 v2 · 2023-03-08 · eess.IV · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JC63JN26SE7YPE6DXSA4RF5PNG}

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	2026-07-05T05:49:44.391072Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

48bdb4b75e913f8793c3bc81c897af699206b19f645951d135420825cbdfcb34

Aliases

arxiv: 2303.04661 · arxiv_version: 2303.04661v2 · doi: 10.48550/arxiv.2303.04661 · pith_short_12: JC63JN26SE7Y · pith_short_16: JC63JN26SE7YPE6D · pith_short_8: JC63JN26

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/JC63JN26SE7YPE6DXSA4RF5PNG \
  | 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: 48bdb4b75e913f8793c3bc81c897af699206b19f645951d135420825cbdfcb34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "42553601ede984b856e1286cea78b3508f93377367b9e3a349bbbee426ddb0a3",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2023-03-08T15:29:17Z",
    "title_canon_sha256": "c9b28a61f6cdc9c7ffc95d1f3a916832b875ba2156c57e36709c7040ed290146"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2303.04661",
    "kind": "arxiv",
    "version": 2
  }
}