Pith Number

pith:OPJYWBYQ

pith:2019:OPJYWBYQ6RSI5O2VUC46UTG7JO

not attested not anchored not stored refs pending

Back-Projection based Fidelity Term for Ill-Posed Linear Inverse Problems

Raja Giryes, Tom Tirer

arxiv:1906.06794 v2 · 2019-06-16 · cs.CV · cs.NA · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPJYWBYQ6RSI5O2VUC46UTG7JO}

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	2026-07-05T00:59:33.504375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d38b0710f4648ebb55a0b9ea4cdf4b8fa0ec187c55284e12c048bb7052dfaa

Aliases

arxiv: 1906.06794 · arxiv_version: 1906.06794v2 · doi: 10.48550/arxiv.1906.06794 · pith_short_12: OPJYWBYQ6RSI · pith_short_16: OPJYWBYQ6RSI5O2V · pith_short_8: OPJYWBYQ

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/OPJYWBYQ6RSI5O2VUC46UTG7JO \
  | 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: 73d38b0710f4648ebb55a0b9ea4cdf4b8fa0ec187c55284e12c048bb7052dfaa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d95a2652b4ea9f03b881ed2ac3f1d54ba643a4ccf41620f3462c8c19152d205",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-06-16T23:27:37Z",
    "title_canon_sha256": "48256417c79493b48cf727718a5411ef1d033ba650aac5226f619d9ab58c9419"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06794",
    "kind": "arxiv",
    "version": 2
  }
}