Pith Number

pith:2FOSSQLJ

pith:2021:2FOSSQLJEYSZUIQ6IYQC76CN2X

not attested not anchored not stored refs pending

Solving Optimization Problems over the Stiefel Manifold by Smooth Exact Penalty Function

Nachuan Xiao, Xin Liu

arxiv:2110.08986 v3 · 2021-10-18 · 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{2FOSSQLJEYSZUIQ6IYQC76CN2X}

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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

1 paper in Pith

Benign Landscape of Quadratic Programs with Orthogonality Constraints and Its Application to Heteroscedastic Probabilistic PCA

Receipt and verification

First computed	2026-07-05T05:26:02.959181Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d15d29416926259a221e46202ff84dd5f394783933ee6e5c03f9cb431d531a81

Aliases

arxiv: 2110.08986 · arxiv_version: 2110.08986v3 · doi: 10.48550/arxiv.2110.08986 · pith_short_12: 2FOSSQLJEYSZ · pith_short_16: 2FOSSQLJEYSZUIQ6 · pith_short_8: 2FOSSQLJ

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/2FOSSQLJEYSZUIQ6IYQC76CN2X \
  | 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: d15d29416926259a221e46202ff84dd5f394783933ee6e5c03f9cb431d531a81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac4cbadca4b26bbb6b9a0e9eaea54e912b1e56f3fcaa46b6c6a6ccadffe66f59",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2021-10-18T02:42:11Z",
    "title_canon_sha256": "a595df69f9326c8ebdf0d79c1ab78592c25518dbda0b7ceafe88d49e4977c206"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.08986",
    "kind": "arxiv",
    "version": 3
  }
}