Pith Number

pith:TEVJDQPC

pith:2024:TEVJDQPCWO3XYSI6R62WNWKT5H

not attested not anchored not stored refs pending

Quick unsupervised hyperspectral dimensionality reduction for earth observation: a comparison

Daniela Lupu, Ion Necoara, Joseph L. Garrett, Milica Orlandic, Tor Arne Johansen

arxiv:2402.16566 v1 · 2024-02-26 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TEVJDQPCWO3XYSI6R62WNWKT5H}

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	2026-07-05T07:49:23.773393Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

992a91c1e2b3b77c491e8fb566d953e9d94082c67f30e0b76ef12e8ed0b6b13b

Aliases

arxiv: 2402.16566 · arxiv_version: 2402.16566v1 · doi: 10.48550/arxiv.2402.16566 · pith_short_12: TEVJDQPCWO3X · pith_short_16: TEVJDQPCWO3XYSI6 · pith_short_8: TEVJDQPC

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/TEVJDQPCWO3XYSI6R62WNWKT5H \
  | 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: 992a91c1e2b3b77c491e8fb566d953e9d94082c67f30e0b76ef12e8ed0b6b13b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44c521af039c4dddbaba3ff05c006083b26343d2711b8016e7b0675b27116615",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2024-02-26T13:43:43Z",
    "title_canon_sha256": "84ee2e937664398264177bfc48326f47a7b80b6c4057740388fbf81f64aabb3a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2402.16566",
    "kind": "arxiv",
    "version": 1
  }
}