Pith Number

pith:2O3HS3KS

pith:2026:2O3HS3KSWL2ASXMZAMF6XFEWST

not attested not anchored not stored refs pending

No Hard Negatives Required: Concept Centric Learning Leads to Compositionality without Degrading Zero-shot Capabilities of Contrastive Models

Brais Martinez, David T. Hoffmann, Hai X. Pham, Ricardo Guerrero

arxiv:2603.25722 v2 · 2026-03-26 · cs.CV · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2O3HS3KSWL2ASXMZAMF6XFEWST}

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	2026-05-20T01:06:09.247798Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3b6796d52b2f4095d99030beb949694e91d943826e59153d7d3bee67a7f3313

Aliases

arxiv: 2603.25722 · arxiv_version: 2603.25722v2 · doi: 10.48550/arxiv.2603.25722 · pith_short_12: 2O3HS3KSWL2A · pith_short_16: 2O3HS3KSWL2ASXMZ · pith_short_8: 2O3HS3KS

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/2O3HS3KSWL2ASXMZAMF6XFEWST \
  | 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: d3b6796d52b2f4095d99030beb949694e91d943826e59153d7d3bee67a7f3313

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f729294d008cc4f3fa8e51c5dcfca27a7cbd5205b0c176fd6d008fac28af0066",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-03-26T17:58:04Z",
    "title_canon_sha256": "4b20039c3ccb5e62ceba06b6932030c8ac2c4cc06e0febc30848f7fa17bc762a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.25722",
    "kind": "arxiv",
    "version": 2
  }
}