Pith Number

pith:FUQSTSVR

pith:2026:FUQSTSVRRATJJYNIXCZARVINMZ

not attested not anchored not stored refs pending

A Defense of the Quadratic Model

Alexandru Meterez, Alex Damian, Cengiz Pehlevan, Depen Morwani, Pranav Ajit Nair, Sham Kakade

arxiv:2607.21716 v1 · 2026-07-23 · cs.LG · cs.AI · math.OC · 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{FUQSTSVRRATJJYNIXCZARVINMZ}

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	2026-07-27T00:20:17.158434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d2129cab1882694e1a8b8b208d50d664bc340a849b91c4778242d12e281e790

Aliases

arxiv: 2607.21716 · arxiv_version: 2607.21716v1 · doi: 10.48550/arxiv.2607.21716 · pith_short_12: FUQSTSVRRATJ · pith_short_16: FUQSTSVRRATJJYNI · pith_short_8: FUQSTSVR

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/FUQSTSVRRATJJYNIXCZARVINMZ \
  | 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: 2d2129cab1882694e1a8b8b208d50d664bc340a849b91c4778242d12e281e790

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc5d2f6b5ce3dbd63071166a63c6b2a8db88db87b7dbc33c412c940cad228979",
    "cross_cats_sorted": [
      "cs.AI",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-23T18:02:03Z",
    "title_canon_sha256": "e146881ecc9427463e48ab6464a026504f1b1a63f7dbcf5e61fbcc9d6d8a6c45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.21716",
    "kind": "arxiv",
    "version": 1
  }
}