Pith Number

pith:XM4ZFSX7

pith:2018:XM4ZFSX7VUPBUP6KX3DD5IKSIX

not attested not anchored not stored refs pending

Convex Class Model on Symmetric Positive Definite Manifolds

Arnold Wiliem, Brian C. Lovell, Kun Zhao, Shaokang Chen

arxiv:1806.05343 v2 · 2018-06-14 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XM4ZFSX7VUPBUP6KX3DD5IKSIX}

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	2026-05-17T23:44:48.270913Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb3992caffad1e1a3fcabec63ea15245e14eeaf3bb9f46b704966519adb4ed75

Aliases

arxiv: 1806.05343 · arxiv_version: 1806.05343v2 · doi: 10.48550/arxiv.1806.05343 · pith_short_12: XM4ZFSX7VUPB · pith_short_16: XM4ZFSX7VUPBUP6K · pith_short_8: XM4ZFSX7

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/XM4ZFSX7VUPBUP6KX3DD5IKSIX \
  | 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: bb3992caffad1e1a3fcabec63ea15245e14eeaf3bb9f46b704966519adb4ed75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dc12b71c216cba42ba25d6714f997381d61a77024a75efc9e4a0385074d1bfa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-06-14T02:57:35Z",
    "title_canon_sha256": "fa376001f2fbc6e5bf90304d7c410bbd9e61aed1cbbf85a40b64c4979d2b3980"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.05343",
    "kind": "arxiv",
    "version": 2
  }
}