Pith Number

pith:YSXYOSWF

pith:2015:YSXYOSWFNV3DXK4RYTPRWOALCV

not attested not anchored not stored refs pending

Approximate Joint Diagonalization and Geometric Mean of Symmetric Positive Definite Matrices

Alexandre Barachant (GIPSA-VIBS), Bijan Afsari (JHU), Maher Moakher (LAMSIN), Marco Congedo (GIPSA-VIBS)

arxiv:1505.07343 v1 · 2015-05-26 · math.DG · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YSXYOSWFNV3DXK4RYTPRWOALCV}

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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.

Receipt and verification

First computed	2026-05-18T02:02:04.743659Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4af874ac56d763bab91c4df1b380b156e08885206776f79d939e0116001b61a

Aliases

arxiv: 1505.07343 · arxiv_version: 1505.07343v1 · doi: 10.48550/arxiv.1505.07343 · pith_short_12: YSXYOSWFNV3D · pith_short_16: YSXYOSWFNV3DXK4R · pith_short_8: YSXYOSWF

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/YSXYOSWFNV3DXK4RYTPRWOALCV \
  | 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: c4af874ac56d763bab91c4df1b380b156e08885206776f79d939e0116001b61a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1bd85c67aa8d2362718fe2cbd63a74dcf15418e313b9ad63397973917e9e124",
    "cross_cats_sorted": [
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2015-05-26T12:25:29Z",
    "title_canon_sha256": "d0fec3f6158b9a99299a239b4fbc213bafd9b842e80a4663721b8be55c419993"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07343",
    "kind": "arxiv",
    "version": 1
  }
}