Pith Number

pith:C6HGH2UC

pith:2024:C6HGH2UCGDNPBTJ2OAZH5KJ3FK

not attested not anchored not stored refs pending

Universal Neurons in GPT2 Language Models

Dimitris Bertsimas, Neel Nanda, Qinyi Sun, Tara Rezaei Kheirkhah, Theo Horsley, Wes Gurnee, Will Hathaway, Zifan Carl Guo

arxiv:2401.12181 v1 · 2024-01-22 · cs.LG · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{C6HGH2UCGDNPBTJ2OAZH5KJ3FK}

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.

Cited by

9 papers in Pith

How Optimality Structures Sparse Dictionaries: A Theory for Understanding SAE Representations

WriteSAE: Sparse Autoencoders for Recurrent State

Gemma Scope: Open Sparse Autoencoders Everywhere All At Once on Gemma 2

Rethinking Layer Relevance in Large Language Models Beyond Cosine Similarity

WriteSAE: Sparse Autoencoders for Recurrent State

Receipt and verification

First computed	2026-07-05T07:36:16.568443Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

178e63ea8230daf0cd3a70327ea93b2a96d29478cbb5d3b686a22345395925d8

Aliases

arxiv: 2401.12181 · arxiv_version: 2401.12181v1 · doi: 10.48550/arxiv.2401.12181 · pith_short_12: C6HGH2UCGDNP · pith_short_16: C6HGH2UCGDNPBTJ2 · pith_short_8: C6HGH2UC

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/C6HGH2UCGDNPBTJ2OAZH5KJ3FK \
  | 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: 178e63ea8230daf0cd3a70327ea93b2a96d29478cbb5d3b686a22345395925d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c176443a373aefef669a82ba7d00e90d0df1072c296c32b19ce1fe1ff0ed317e",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.CL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2024-01-22T18:11:01Z",
    "title_canon_sha256": "d1c3b8253cd376d29649c1cccd3348f01d06b306714d98ca616443c4b52b75e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2401.12181",
    "kind": "arxiv",
    "version": 1
  }
}