Pith Number

pith:YKU5H7TK

pith:2026:YKU5H7TKPLCLJPR2MZCNIZQZGY

not attested not anchored not stored refs pending

First-Order Predictable but Pairwise Fragile: Local Task Adaptation in Trained Transformers

Irina Piontkovskaia, Sergey Nikolenko

arxiv:2607.16821 v1 · 2026-07-18 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YKU5H7TKPLCLJPR2MZCNIZQZGY}

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	2026-07-21T01:21:00.611180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2a9d3fe6a7ac4b4be3a6644d466193608e48750d0ed3a2ab3f0ab2f7e30a38f

Aliases

arxiv: 2607.16821 · arxiv_version: 2607.16821v1 · doi: 10.48550/arxiv.2607.16821 · pith_short_12: YKU5H7TKPLCL · pith_short_16: YKU5H7TKPLCLJPR2 · pith_short_8: YKU5H7TK

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/YKU5H7TKPLCLJPR2MZCNIZQZGY \
  | 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: c2a9d3fe6a7ac4b4be3a6644d466193608e48750d0ed3a2ab3f0ab2f7e30a38f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc0f2666b47f1cc8154771dd569b56af8b16233fb4101d03666488125632aa9d",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2026-07-18T13:43:44Z",
    "title_canon_sha256": "f53d6d0cbc75c17a4b9ecb39eb2c167259e5f421d07d908963f77c54ae7e9241"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.16821",
    "kind": "arxiv",
    "version": 1
  }
}