Pith Number

pith:CBP33XY4

pith:2016:CBP33XY4WQAKHHDWWKFF7VK723

not attested not anchored not stored refs pending

An Efficient Method for Robust Projection Matrix Design

Tao Hong, Zhihui Zhu

arxiv:1609.08281 v3 · 2016-09-27 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CBP33XY4WQAKHHDWWKFF7VK723}

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	2026-05-18T00:35:55.564033Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

105fbddf1cb400a39c76b28a5fd55fd6f93a1f8bdc0185e4752b52e26169c759

Aliases

arxiv: 1609.08281 · arxiv_version: 1609.08281v3 · doi: 10.48550/arxiv.1609.08281 · pith_short_12: CBP33XY4WQAK · pith_short_16: CBP33XY4WQAKHHDW · pith_short_8: CBP33XY4

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/CBP33XY4WQAKHHDWWKFF7VK723 \
  | 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: 105fbddf1cb400a39c76b28a5fd55fd6f93a1f8bdc0185e4752b52e26169c759

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "294bccda9bc444808ba589828ffaba29976418fae0e692f8b741fadae9fe6c35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2016-09-27T06:59:11Z",
    "title_canon_sha256": "47e03845daf407f684f57dac132a0510e31eb3f1d217a43d2ef3f054861256e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1609.08281",
    "kind": "arxiv",
    "version": 3
  }
}