Pith Number

pith:JU3NQM4K

pith:2013:JU3NQM4K7LYMEJL5NJWVJLNLQR

not attested not anchored not stored refs pending

Speckle Reduction in Polarimetric SAR Imagery with Stochastic Distances and Nonlocal Means

Alejandro C. Frery, Corina C. Freitas, Leonardo Torres, Sidnei J. S. Sant'Anna

arxiv:1304.4634 v1 · 2013-04-16 · cs.IT · cs.CV · cs.GR · math.IT · stat.AP · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JU3NQM4K7LYMEJL5NJWVJLNLQR}

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	2026-05-18T03:27:44.133172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4d36d8338afaf0c2257d6a6d54adab845c7e0a8b4fe4fe43f47e6d6d52ef3b2c

Aliases

arxiv: 1304.4634 · arxiv_version: 1304.4634v1 · doi: 10.48550/arxiv.1304.4634 · pith_short_12: JU3NQM4K7LYM · pith_short_16: JU3NQM4K7LYMEJL5 · pith_short_8: JU3NQM4K

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/JU3NQM4K7LYMEJL5NJWVJLNLQR \
  | 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: 4d36d8338afaf0c2257d6a6d54adab845c7e0a8b4fe4fe43f47e6d6d52ef3b2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87daf8eafcc746b61c33bdffbdebb50fbbec620e73cb52df8b817a431d09c5e4",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.GR",
      "math.IT",
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-04-16T22:11:53Z",
    "title_canon_sha256": "0eebaf9cbcaacc6abf91e96e4822eb795ecb6e1ec3f76c7b7b7e6b12356addfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.4634",
    "kind": "arxiv",
    "version": 1
  }
}