Pith Number

pith:XCYBV4SG

pith:2018:XCYBV4SGDB4XBHCZJZACQVYUUO

not attested not anchored not stored refs pending

The Matrix Calculus You Need For Deep Learning

Jeremy Howard, Terence Parr

arxiv:1802.01528 v3 · 2018-02-05 · cs.LG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCYBV4SGDB4XBHCZJZACQVYUUO}

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.

Cited by

1 paper in Pith

A Tour of Convolutional Networks Guided by Linear Interpreters

Receipt and verification

First computed	2026-05-18T00:11:57.462021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8b01af2461879709c594e40285714a382dfda6c928acdf43fc7c235894f46a3

Aliases

arxiv: 1802.01528 · arxiv_version: 1802.01528v3 · doi: 10.48550/arxiv.1802.01528 · pith_short_12: XCYBV4SGDB4X · pith_short_16: XCYBV4SGDB4XBHCZ · pith_short_8: XCYBV4SG

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/XCYBV4SGDB4XBHCZJZACQVYUUO \
  | 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: b8b01af2461879709c594e40285714a382dfda6c928acdf43fc7c235894f46a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b4e68fe23f3bc8aa0f3bac28862bc35264a46f40e0fb024624999a16bece941",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-02-05T17:37:59Z",
    "title_canon_sha256": "16e9f80dfa0d6a69c488509844f3d88b3c127d2aac28c72cd9436853f82ef4e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.01528",
    "kind": "arxiv",
    "version": 3
  }
}