Pith Number

pith:N4ST3K6G

pith:2018:N4ST3K6GDBUI2MAT4AEVOZQKU4

not attested not anchored not stored refs pending

Component SPD Matrices: A lower-dimensional discriminative data descriptor for image set classification

Kai-Xuan Chen, Xiao-Jun Wu

arxiv:1806.06178 v1 · 2018-06-16 · 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{N4ST3K6GDBUI2MAT4AEVOZQKU4}

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	2026-05-18T00:08:25.416529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f253dabc618688d3013e00957660aa72f3bc936fcb8c0b0c120ac0569d5aae9

Aliases

arxiv: 1806.06178 · arxiv_version: 1806.06178v1 · doi: 10.48550/arxiv.1806.06178 · pith_short_12: N4ST3K6GDBUI · pith_short_16: N4ST3K6GDBUI2MAT · pith_short_8: N4ST3K6G

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/N4ST3K6GDBUI2MAT4AEVOZQKU4 \
  | 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: 6f253dabc618688d3013e00957660aa72f3bc936fcb8c0b0c120ac0569d5aae9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "47da8b568286072d226ee04397c974f41da4fa9554a397d6537f551194280473",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-06-16T04:31:59Z",
    "title_canon_sha256": "9fc56db4a5cae18aaac304eac0d26eba156a1713f8a27d25b9fd88e0967e4de3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.06178",
    "kind": "arxiv",
    "version": 1
  }
}