Pith Number

pith:N3ICUYHE

pith:2022:N3ICUYHEN6FOCO3FBZN5CXGH2O

not attested not anchored not stored refs pending

Collaborative Representation for SPD Matrices with Application to Image-Set Classification

Li Chu, Rui Wang, Xiao-Jun Wu

arxiv:2201.08962 v1 · 2022-01-22 · 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{N3ICUYHEN6FOCO3FBZN5CXGH2O}

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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.

Cited by

1 paper in Pith

A Test for Treatment Heterogeneity under a Distributional Difference-in-Difference Framework

Receipt and verification

First computed	2026-07-05T03:50:38.767817Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6ed02a60e46f8ae13b650e5bd15cc7d3b4fcf60282448f6e9fa84de32f3ca2a2

Aliases

arxiv: 2201.08962 · arxiv_version: 2201.08962v1 · doi: 10.48550/arxiv.2201.08962 · pith_short_12: N3ICUYHEN6FO · pith_short_16: N3ICUYHEN6FOCO3F · pith_short_8: N3ICUYHE

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/N3ICUYHEN6FOCO3FBZN5CXGH2O \
  | 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: 6ed02a60e46f8ae13b650e5bd15cc7d3b4fcf60282448f6e9fa84de32f3ca2a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "77d040b1244507e62d4d9187573397b55d7e5814552e4de80944e43562589adc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2022-01-22T04:56:53Z",
    "title_canon_sha256": "c52a6a9511e5a554c74453deb7fedf6fda1aa0568b40c5cef272beeacdcc5943"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.08962",
    "kind": "arxiv",
    "version": 1
  }
}