Pith Number

pith:DJPV7COV

pith:2026:DJPV7COVSWDEII3L3SWWXT3GF2

not attested not anchored not stored refs pending

MatrixFSDP: communication-free matrix optimizers under ZeRO-3 parameter sharding

Hao Zhang, Ming Gao, Yanwu Xu

arxiv:2607.05895 v1 · 2026-07-07 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DJPV7COVSWDEII3L3SWWXT3GF2}

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	2026-07-08T01:18:49.556770Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a5f5f89d5958644236bdcad6bcf662e8e10dbe915b42e6fbe5e9e42117f0216

Aliases

arxiv: 2607.05895 · arxiv_version: 2607.05895v1 · doi: 10.48550/arxiv.2607.05895 · pith_short_12: DJPV7COVSWDE · pith_short_16: DJPV7COVSWDEII3L · pith_short_8: DJPV7COV

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/DJPV7COVSWDEII3L3SWWXT3GF2 \
  | 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: 1a5f5f89d5958644236bdcad6bcf662e8e10dbe915b42e6fbe5e9e42117f0216

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec4e4050e3702a8dc0a610a4a43b53fdbab81a07c30f2a8f241f4f878effae13",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2026-07-07T06:45:39Z",
    "title_canon_sha256": "32db0eb0d6939f3382a484289c024953e3e002cc61514e95dc18205473481d8c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.05895",
    "kind": "arxiv",
    "version": 1
  }
}