Pith Number

pith:T4B7D2VI

pith:2019:T4B7D2VIWE2HVLLIBHRYX2M4LV

not attested not anchored not stored refs pending

On Intra-Class Variance for Deep Learning of Classifiers

Rafal Pilarczyk, Wladyslaw Skarbek

arxiv:1901.11186 v2 · 2019-01-31 · 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{T4B7D2VIWE2HVLLIBHRYX2M4LV}

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	2026-05-17T23:48:04.588904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f03f1eaa8b1347aad6809e38be99c5d742dbd53ad16e863629469fc220d9b33

Aliases

arxiv: 1901.11186 · arxiv_version: 1901.11186v2 · doi: 10.48550/arxiv.1901.11186 · pith_short_12: T4B7D2VIWE2H · pith_short_16: T4B7D2VIWE2HVLLI · pith_short_8: T4B7D2VI

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/T4B7D2VIWE2HVLLIBHRYX2M4LV \
  | 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: 9f03f1eaa8b1347aad6809e38be99c5d742dbd53ad16e863629469fc220d9b33

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ac9bb4db1331f9cb92609652447d70eda87b643a96b3e9c5360fb4950d3e74f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-01-31T02:54:14Z",
    "title_canon_sha256": "ee6eee3e9a532174e65f6c4b857986e23aff1d2b7ade673b22f6283b10717034"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.11186",
    "kind": "arxiv",
    "version": 2
  }
}