Pith Number

pith:MN5WLFNP

pith:2026:MN5WLFNPB3JKUJGWGPKMLGE5PN

not attested not anchored not stored refs pending

Quartet II: Accurate LLM Pre-Training in NVFP4 by Improved Unbiased Gradient Estimation

Andrei Panferov, Dan Alistarh, Erik Schultheis, Soroush Tabesh

arxiv:2601.22813 v2 · 2026-01-30 · 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{MN5WLFNPB3JKUJGWGPKMLGE5PN}

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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.

Cited by

6 papers in Pith

Decomposing MXFP4 quantization error for LLM reinforcement learning: reducible bias, recoverable deadzone, and an irreducible floor

Grid Games: The Power of Multiple Grids for Quantizing Large Language Models

Normalized Architectures are Natively 4-Bit

Quantizing With Randomized Hadamard Transforms: Efficient Heuristic Now Proven

Receipt and verification

First computed	2026-06-02T02:04:50.394496Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

637b6595af0ed2aa24d633d4c5989d7b7d36087e669a0775c52ac416b08ced3b

Aliases

arxiv: 2601.22813 · arxiv_version: 2601.22813v2 · doi: 10.48550/arxiv.2601.22813 · pith_short_12: MN5WLFNPB3JK · pith_short_16: MN5WLFNPB3JKUJGW · pith_short_8: MN5WLFNP

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/MN5WLFNPB3JKUJGWGPKMLGE5PN \
  | 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: 637b6595af0ed2aa24d633d4c5989d7b7d36087e669a0775c52ac416b08ced3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6ad2db74a24970367b48bd84321037b1fc420819c09cc9c86345d8539d928786",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-01-30T10:39:11Z",
    "title_canon_sha256": "b3b04239cf4d10da06188aad30bdc3a304808442b54b26b1e029245831542985"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2601.22813",
    "kind": "arxiv",
    "version": 2
  }
}