Pith Number

pith:HEKGDQSX

pith:2019:HEKGDQSXBCVVXSWCE3VYR2HQ6C

not attested not anchored not stored refs pending

Fix Your Features: Stationary and Maximally Discriminative Embeddings using Regular Polytope (Fixed Classifier) Networks

Alberto Del Bimbo, Claudio Baecchi, Federico Pernici, Matteo Bruni

arxiv:1902.10441 v2 · 2019-02-27 · 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{HEKGDQSXBCVVXSWCE3VYR2HQ6C}

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	2026-05-17T23:52:21.280375Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

391461c25708ab5bcac226eb88e8f0f0a3de0a07220e65751a664c4e4809ec4b

Aliases

arxiv: 1902.10441 · arxiv_version: 1902.10441v2 · doi: 10.48550/arxiv.1902.10441 · pith_short_12: HEKGDQSXBCVV · pith_short_16: HEKGDQSXBCVVXSWC · pith_short_8: HEKGDQSX

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/HEKGDQSXBCVVXSWCE3VYR2HQ6C \
  | 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: 391461c25708ab5bcac226eb88e8f0f0a3de0a07220e65751a664c4e4809ec4b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "15a80e17ddb07b730bfc648add1795415a5f4e4b00b4380a2ec1b898d301baf5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2019-02-27T10:33:46Z",
    "title_canon_sha256": "b439a3abb0ec99f8e919f78ff5476492ae3ced6f8fe3b9cdedcf69bc728b188c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10441",
    "kind": "arxiv",
    "version": 2
  }
}