Pith Number

pith:USGGJIA4

pith:2019:USGGJIA474DGRUFPSTWH4K5VGB

not attested not anchored not stored refs pending

Matrix-Free Preconditioning in Online Learning

Ashok Cutkosky, Tamas Sarlos

arxiv:1905.12721 v1 · 2019-05-29 · cs.LG · math.OC · 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{USGGJIA474DGRUFPSTWH4K5VGB}

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	2026-05-17T23:44:39.787878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a48c64a01cff0668d0af94ec7e2bb530615099e54352f5c83cd6cc854fbc9fb2

Aliases

arxiv: 1905.12721 · arxiv_version: 1905.12721v1 · doi: 10.48550/arxiv.1905.12721 · pith_short_12: USGGJIA474DG · pith_short_16: USGGJIA474DGRUFP · pith_short_8: USGGJIA4

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/USGGJIA474DGRUFPSTWH4K5VGB \
  | 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: a48c64a01cff0668d0af94ec7e2bb530615099e54352f5c83cd6cc854fbc9fb2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69656a7612fa1107f0408c50a61031f8deff889306058a7e14c968f6627c2aad",
    "cross_cats_sorted": [
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-05-29T21:00:14Z",
    "title_canon_sha256": "61389d6d4e06c7cac832b4bd8f15d4d49050eefcbee5fd976f47be738e6ae3ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.12721",
    "kind": "arxiv",
    "version": 1
  }
}