Pith Number

pith:7ZAHDP7D

pith:2019:7ZAHDP7D4FWKTYOPOGAW6UUYNJ

not attested not anchored not stored refs pending

Riemannian joint dimensionality reduction and dictionary learning on symmetric positive definite manifold

Bamdev Mishra, Hiroyuki Kasai

arxiv:1902.04186 v1 · 2019-02-11 · cs.CV · cs.AI · cs.LG · stat.AP · 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{7ZAHDP7D4FWKTYOPOGAW6UUYNJ}

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	2026-05-17T23:54:12.860113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe4071bfe3e16ca9e1cf71816f52986a5b5b0b7d296eabce1fc57115b15d4822

Aliases

arxiv: 1902.04186 · arxiv_version: 1902.04186v1 · doi: 10.48550/arxiv.1902.04186 · pith_short_12: 7ZAHDP7D4FWK · pith_short_16: 7ZAHDP7D4FWKTYOP · pith_short_8: 7ZAHDP7D

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/7ZAHDP7D4FWKTYOPOGAW6UUYNJ \
  | 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: fe4071bfe3e16ca9e1cf71816f52986a5b5b0b7d296eabce1fc57115b15d4822

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26df090420a10d54450956c75890d3888c3c4b5ce6a56f48b51c20afaeacfd20",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG",
      "stat.AP",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-02-11T23:49:03Z",
    "title_canon_sha256": "4d74ad252a11ce0a48737214169891356af81ecdac58f4e14e453b0c8ebb83a1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.04186",
    "kind": "arxiv",
    "version": 1
  }
}