Pith Number

pith:3FKP3RK6

pith:2024:3FKP3RK6D63T2FUH3TCTMPVSND

not attested not anchored not stored refs pending

Riemannian optimization on the symplectic Stiefel manifold using second-order information

Ralf Zimmermann, Rasmus Jensen

arxiv:2404.08463 v2 · 2024-04-12 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3FKP3RK6D63T2FUH3TCTMPVSND}

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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.

Cited by

2 papers in Pith

A Riemannian gradient descent method for optimization on the indefinite Stiefel manifold

An inexact variable metric proximal linearization method for composite optimization on manifolds

Receipt and verification

First computed	2026-07-05T08:36:47.095301Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d954fdc55e1fb73d1687dcc5363eb268edf17d3c6f99d1d79f3046a2dc98448e

Aliases

arxiv: 2404.08463 · arxiv_version: 2404.08463v2 · doi: 10.48550/arxiv.2404.08463 · pith_short_12: 3FKP3RK6D63T · pith_short_16: 3FKP3RK6D63T2FUH · pith_short_8: 3FKP3RK6

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/3FKP3RK6D63T2FUH3TCTMPVSND \
  | 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: d954fdc55e1fb73d1687dcc5363eb268edf17d3c6f99d1d79f3046a2dc98448e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "318c939d30b43e55d933986dc31047ae5042f142158a2e9e118fb24054cc6e05",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-04-12T13:23:22Z",
    "title_canon_sha256": "dd2695de67d85f3c4e74e6c61609a457224cb988b1ade318a6a8eff349ce8508"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.08463",
    "kind": "arxiv",
    "version": 2
  }
}