Pith Number

pith:S4OQSWN7

pith:2024:S4OQSWN7JRVAOVFSM77Y6OQ3PZ

not attested not anchored not stored refs pending

A single shooting method with approximate Fr\'{e}chet derivative for computing geodesics on the Stiefel manifold

Marco Sutti

arxiv:2404.04089 v2 · 2024-04-05 · 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{S4OQSWN7JRVAOVFSM77Y6OQ3PZ}

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	2026-06-01T01:03:38.426804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

971d0959bf4c6a0754b267ff8f3a1b7e4f5823ef6525c22c86e0c4a9b047aa03

Aliases

arxiv: 2404.04089 · arxiv_version: 2404.04089v2 · doi: 10.48550/arxiv.2404.04089 · pith_short_12: S4OQSWN7JRVA · pith_short_16: S4OQSWN7JRVAOVFS · pith_short_8: S4OQSWN7

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/S4OQSWN7JRVAOVFSM77Y6OQ3PZ \
  | 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: 971d0959bf4c6a0754b267ff8f3a1b7e4f5823ef6525c22c86e0c4a9b047aa03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab4a2d96a4cf5b0d8777fccb3071c2dcdd227643ffbb43ad026e6f825f68d7e1",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-04-05T13:27:10Z",
    "title_canon_sha256": "3818d3109758b56add76831580d8844d3627e9948d876833033be95b1f88e63e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2404.04089",
    "kind": "arxiv",
    "version": 2
  }
}