Pith Number

pith:7S52UX24

pith:2021:7S52UX24ZZVHJKCFQX5OQN3N2Z

not attested not anchored not stored refs pending

Why Approximate Matrix Square Root Outperforms Accurate SVD in Global Covariance Pooling?

Nicu Sebe, Wei Wang, Yue Song

arxiv:2105.02498 v2 · 2021-05-06 · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7S52UX24ZZVHJKCFQX5OQN3N2Z}

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	2026-07-05T03:00:09.309851Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcbbaa5f5cce6a74a84585fae8376dd66320f19000ded4f37b4b2028d0d633dc

Aliases

arxiv: 2105.02498 · arxiv_version: 2105.02498v2 · doi: 10.48550/arxiv.2105.02498 · pith_short_12: 7S52UX24ZZVH · pith_short_16: 7S52UX24ZZVHJKCF · pith_short_8: 7S52UX24

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/7S52UX24ZZVHJKCFQX5OQN3N2Z \
  | 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: fcbbaa5f5cce6a74a84585fae8376dd66320f19000ded4f37b4b2028d0d633dc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc208de1e6fb2070b6073f95eaf507bcaa9f52fb87c31630f628d2812d19a6ae",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2021-05-06T08:03:45Z",
    "title_canon_sha256": "d384fdadb7514c7c504da1ddc3f120fb44ba5a7378db85d3453e30cccb626eb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.02498",
    "kind": "arxiv",
    "version": 2
  }
}