Pith Number

pith:VPWKKSPT

pith:2019:VPWKKSPT7GWDFF2RGNCTS5PSU3

not attested not anchored not stored refs pending

Learning a Representation with the Block-Diagonal Structure for Pattern Classification

He-Feng Yin, Josef Kittler, Xiao-Jun Wu, Zhen-Hua Feng

arxiv:1911.10301 v1 · 2019-11-23 · 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{VPWKKSPT7GWDFF2RGNCTS5PSU3}

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	2026-07-05T00:21:24.228123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abeca549f3f9ac32975133453975f2a6e12c22dec136981c1565944567d769eb

Aliases

arxiv: 1911.10301 · arxiv_version: 1911.10301v1 · doi: 10.48550/arxiv.1911.10301 · pith_short_12: VPWKKSPT7GWD · pith_short_16: VPWKKSPT7GWDFF2R · pith_short_8: VPWKKSPT

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/VPWKKSPT7GWDFF2RGNCTS5PSU3 \
  | 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: abeca549f3f9ac32975133453975f2a6e12c22dec136981c1565944567d769eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d12c6d1efe4355f5ef07a05e5bb4be13d440b6556e859373815349c8240b59a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-11-23T02:40:35Z",
    "title_canon_sha256": "f816202e4e77c07da214acb11a9ef751bb04f200bcc31a486b94bc8a22fd9585"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.10301",
    "kind": "arxiv",
    "version": 1
  }
}