Pith Number

pith:U3TZQBKA

pith:2014:U3TZQBKAZMV2P7LMWCDTYO2CNL

not attested not anchored not stored refs pending

Kernel Methods on the Riemannian Manifold of Symmetric Positive Definite Matrices

Hongdong Li, Mathieu Salzmann, Mehrtash Harandi, Richard Hartley, Sadeep Jayasumana

arxiv:1412.4172 v1 · 2014-12-13 · 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{U3TZQBKAZMV2P7LMWCDTYO2CNL}

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	2026-05-18T02:31:20.023914Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6e7980540cb2ba7fd6cb0873c3b426ae85beada085a306ec0bdede3295d7757

Aliases

arxiv: 1412.4172 · arxiv_version: 1412.4172v1 · doi: 10.48550/arxiv.1412.4172 · pith_short_12: U3TZQBKAZMV2 · pith_short_16: U3TZQBKAZMV2P7LM · pith_short_8: U3TZQBKA

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/U3TZQBKAZMV2P7LMWCDTYO2CNL \
  | 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: a6e7980540cb2ba7fd6cb0873c3b426ae85beada085a306ec0bdede3295d7757

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b89f1dcf73ee4f08b211b0d1708af88b40384e0c0f4fb7401a0eb125fb0cdb51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2014-12-13T00:48:46Z",
    "title_canon_sha256": "e73c0217c28fa832dc930d3f4e798948a188713f28f9707c119381b5766552db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.4172",
    "kind": "arxiv",
    "version": 1
  }
}