Pith Number

pith:WRJVZ3OQ

pith:2018:WRJVZ3OQIEDMET5P3X55DTLD4F

not attested not anchored not stored refs pending

Gradient descent with identity initialization efficiently learns positive definite linear transformations by deep residual networks

David P. Helmbold, Peter L. Bartlett, Philip M. Long

arxiv:1802.06093 v4 · 2018-02-16 · cs.LG · cs.NE · math.OC · math.ST · stat.ML · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WRJVZ3OQIEDMET5P3X55DTLD4F}

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	2026-05-18T00:13:04.624728Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4535cedd04106c24fafddfbd1cd63e1435ded156f187f8ecb726b1117445d30

Aliases

arxiv: 1802.06093 · arxiv_version: 1802.06093v4 · doi: 10.48550/arxiv.1802.06093 · pith_short_12: WRJVZ3OQIEDM · pith_short_16: WRJVZ3OQIEDMET5P · pith_short_8: WRJVZ3OQ

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/WRJVZ3OQIEDMET5P3X55DTLD4F \
  | 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: b4535cedd04106c24fafddfbd1cd63e1435ded156f187f8ecb726b1117445d30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ef943f7f5b25ca9fa32b385a2aa34ff239f0aed74d7ac8b81ed20f0970b2f73",
    "cross_cats_sorted": [
      "cs.NE",
      "math.OC",
      "math.ST",
      "stat.ML",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-02-16T19:24:29Z",
    "title_canon_sha256": "4c0d386ac65498bf2fe456cbb084fe30bc038a11bec3c44d211ed729d9593c49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06093",
    "kind": "arxiv",
    "version": 4
  }
}