Pith Number

pith:QULAYGRY

pith:2018:QULAYGRY4EKZEEUSWV4PEULKDL

not attested not anchored not stored refs pending

Trainable ISTA for Sparse Signal Recovery

Daisuke Ito, Satoshi Takabe, Tadashi Wadayama

arxiv:1801.01978 v3 · 2018-01-06 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QULAYGRY4EKZEEUSWV4PEULKDL}

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	2026-05-17T23:45:41.247073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85160c1a38e115921292b578f2516a1ae842ef19aceada7004996789708d4853

Aliases

arxiv: 1801.01978 · arxiv_version: 1801.01978v3 · doi: 10.48550/arxiv.1801.01978 · pith_short_12: QULAYGRY4EKZ · pith_short_16: QULAYGRY4EKZEEUS · pith_short_8: QULAYGRY

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/QULAYGRY4EKZEEUSWV4PEULKDL \
  | 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: 85160c1a38e115921292b578f2516a1ae842ef19aceada7004996789708d4853

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b30278cdaba8d248721298579bafdf9928919d5bc5fcbaf0c9ae22b87b026b7e",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-01-06T06:53:14Z",
    "title_canon_sha256": "061c283858aa7085bb573eec6c06760147730d31ee216d82e5ab5de89e20cdd2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.01978",
    "kind": "arxiv",
    "version": 3
  }
}