Pith Number

pith:YHWCGZOE

pith:2010:YHWCGZOEPZAXUPLT53C2WCILKF

not attested not anchored not stored refs pending

Regression on fixed-rank positive semidefinite matrices: a Riemannian approach

Gilles Meyer, Rodolphe Sepulchre, Silvere Bonnabel

arxiv:1006.1288 v2 · 2010-06-07 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YHWCGZOEPZAXUPLT53C2WCILKF}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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

Space-Clock Elevator: Multi-Stage Orbital Transport via Rotating Tethers and Elliptical Nodes

Receipt and verification

First computed	2026-05-18T04:30:26.277974Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1ec2365c47e417a3d73eec5ab090b5165b1594f15cbce1e966ea2fdf0a059e5

Aliases

arxiv: 1006.1288 · arxiv_version: 1006.1288v2 · doi: 10.48550/arxiv.1006.1288 · pith_short_12: YHWCGZOEPZAX · pith_short_16: YHWCGZOEPZAXUPLT · pith_short_8: YHWCGZOE

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/YHWCGZOEPZAXUPLT53C2WCILKF \
  | 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: c1ec2365c47e417a3d73eec5ab090b5165b1594f15cbce1e966ea2fdf0a059e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9117fdea78318ec3ed1f57b003d991f24dc1da11cf7181a08940628cc1d7f4b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2010-06-07T16:20:02Z",
    "title_canon_sha256": "b825415e2f2e218db82872d77d1845a7a20cb539ec50aa6ce54b1d7e88cc30b7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.1288",
    "kind": "arxiv",
    "version": 2
  }
}