Pith Number

pith:5DF6OCFW

pith:2021:5DF6OCFWBQOTWPNZ5O6OTKIGZA

not attested not anchored not stored refs pending

Smoothness Matrices Beat Smoothness Constants: Better Communication Compression Techniques for Distributed Optimization

Filip Hanzely, Mher Safaryan, Peter Richt\'arik

arxiv:2102.07245 v1 · 2021-02-14 · cs.LG · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5DF6OCFWBQOTWPNZ5O6OTKIGZA}

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	2026-07-05T02:15:13.992539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8cbe708b60c1d3b3db9ebbce9a906c83ef08e86cc391e365d34793c4c93daa3

Aliases

arxiv: 2102.07245 · arxiv_version: 2102.07245v1 · doi: 10.48550/arxiv.2102.07245 · pith_short_12: 5DF6OCFWBQOT · pith_short_16: 5DF6OCFWBQOTWPNZ · pith_short_8: 5DF6OCFW

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/5DF6OCFWBQOTWPNZ5O6OTKIGZA \
  | 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: e8cbe708b60c1d3b3db9ebbce9a906c83ef08e86cc391e365d34793c4c93daa3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6859a07fc7249bae27e6df20c8fd033fbc1e4b4b7f2ca863f5354b7711a07c99",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-02-14T20:55:02Z",
    "title_canon_sha256": "acaed3c1ebe04a5f7fcab7d309982aba72dd047430a1c16df0407b46f33ef280"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.07245",
    "kind": "arxiv",
    "version": 1
  }
}