Pith Number

pith:5F2PW5PO

pith:2026:5F2PW5PORYSMSBOVJS3DNDEINV

not attested not anchored not stored refs pending

How Low Can You Go? Active Learning for Sparse Model Discovery in the Ultra-Low-Data Limit

Ana Larra\~naga, Steven L. Brunton, Urban Fasel

arxiv:2606.12182 v1 · 2026-06-10 · cs.LG · math.DS · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5F2PW5PORYSMSBOVJS3DNDEINV}

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	2026-06-11T01:10:52.822858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e974fb75ee8e24c905d54cb6368c886d79035bae00066cfaedeb83c0838ff4d0

Aliases

arxiv: 2606.12182 · arxiv_version: 2606.12182v1 · doi: 10.48550/arxiv.2606.12182 · pith_short_12: 5F2PW5PORYSM · pith_short_16: 5F2PW5PORYSMSBOV · pith_short_8: 5F2PW5PO

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/5F2PW5PORYSMSBOVJS3DNDEINV \
  | 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: e974fb75ee8e24c905d54cb6368c886d79035bae00066cfaedeb83c0838ff4d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "624f8c285f5ecbe72a50a743c413c5e9626b434e2d9c40a326d7c4e74f3956d2",
    "cross_cats_sorted": [
      "math.DS",
      "math.OC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-06-10T15:06:59Z",
    "title_canon_sha256": "e1f16e63ad3778515f646f2199796e4ef5e97e848d5a0b81ea99e883f1a4350e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.12182",
    "kind": "arxiv",
    "version": 1
  }
}