Pith Number

pith:3NHBOA5V

pith:2016:3NHBOA5VL6S2O5H44L7C4KKGBM

not attested not anchored not stored refs pending

Unsupervised Classification in Hyperspectral Imagery with Nonlocal Total Variation and Primal-Dual Hybrid Gradient Algorithm

Alexandre Tiard, Andrea L. Bertozzi, Da Kuang, Devin Dahlberg, Dominique Zosso, Stanley Osher, Stephanie Sanchez, Victoria Chayes, Wei Zhu

arxiv:1604.08182 v2 · 2016-04-27 · 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{3NHBOA5VL6S2O5H44L7C4KKGBM}

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	2026-05-18T00:45:49.548582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

db4e1703b55fa5a774fce2fe2e29460b2b0f3f79c714166d7ec5ca79c831e882

Aliases

arxiv: 1604.08182 · arxiv_version: 1604.08182v2 · doi: 10.48550/arxiv.1604.08182 · pith_short_12: 3NHBOA5VL6S2 · pith_short_16: 3NHBOA5VL6S2O5H4 · pith_short_8: 3NHBOA5V

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/3NHBOA5VL6S2O5H44L7C4KKGBM \
  | 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: db4e1703b55fa5a774fce2fe2e29460b2b0f3f79c714166d7ec5ca79c831e882

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8dbe652af31f0736e3befb2bb0c852adab8250148e1b0d07e1c323680c44b6e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2016-04-27T19:11:10Z",
    "title_canon_sha256": "c77e514f5c8a60bc537d10aa9cf55973a990804fa40d84ac88e5467d836ae14a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.08182",
    "kind": "arxiv",
    "version": 2
  }
}